VirtualBox

Installed VirtualBox on Ubuntu x64. At first there was a problem: starting Guest hung system. But this problem was eventually found as a BIOS setting. Avoid enabling Limit CPUID MaxVal in BIOS when using VMM. Now system is working fine. At first, VBox installed from Ubuntu PPA, but then removed that and installed as per this page. Either would probably work fine since problem was BIOS setting.

Now have Ubuntu x86 and x86 guests running on x64 system.

Clean systems are now available for testing programs in both x86 and x64.

- ww

Find the application at: https://sourceforge.net/projects/debipack/

DebiPack thumbnail

DebiPack Screenshot

VirtualBox

Virtual Machine systems have been popular for servers for a few years now. They save big time $$ when setting up server rooms since most of the server systems in an IT shop aren’t that busy. But recently VM has become popular for desktop users. Many of the reasons we used to use “Dual-Boot” systems are much better served using VM. There are several reasons why you might want to run VM on your system:

• You have a windows system and want to run Ubuntu.
• You have a Mac and want to run Windows occasionally.
• You have Windows, or a Mac, and want to have a system where you can surf safely, for example to do your online banking.
• You are doing development and want to have a “clean” system for testing.

One of the most functional, and easiest to deploy, VM systems is VirtualBox. Now inside Oracle, this system was originally developed at Sun and is Open Source, and free. Microsoft has Windows Virtual PC,  and you can run Windows XP or Ubuntu on your Vista or Windows 7 system. But of course, it has no support for Ubuntu or OS/X as a host, so why learn more than one system? I’m going to use Windows and Ubuntu systems as hosts, so I’ve chosen VirtualBox.

Hosts and Guests

The terms are Host and Guest. Host is the system that is running directly on the hardware. The Guest is the system that is running in a “virtual machine”.

As a user, you probably have a Windows Host – your usual reasonably modern Windows system. It should be a hardware box purchased in the last three or four years. Systems older than that may not have the virtual machine processor extensions that make things a lot faster. While VM may work on older processors, it is probably worth while.

As a Mac user, you may want to run Windows in a VM on your Mac. I’m not an expert here, but you are going to find lots of material on the web to solve your problem, and don’t forget to check out the dozens of  YouTube videos that show how to install Windows in your Mac in a VM.

Safe Banking

Increasingly, there are viruses out there that target users that do online banking. These viruses get into your system and hide, using root-kits, so that not even your anti-virus software can see them. Then when you log into your bank, they watch your connection and transfer all your money off-shore while you are online. Before you know it, your bank account is empty.

One way to thwart these viruses is to do all your banking from a system that the virus cannot attack. I’ve not heard of any of these attacks being done on Linux systems, so that doing all your banking from Ubuntu may be a safer bet.

VMs like VirtualBox make running an Ubuntu system much easier. There are quite a few YouTube videos and other web pages out there showing you how to install an Ubuntu system in a VM on your Windows Laptop or Desktop machine.

Using VMs for Development

I am recently writing programs, most of which are portable on both Windows and Linux. I have some Linux hardware systems, but it is more convenient to do my code writing on my laptop, so I wanted a VM running an Ubuntu system. VirtualBox is just the ticket.

When I was studying the problem, the searches came up with Xen first. When there are lots of gray boxes in the documentation containing command line scripts that must be run to install a product, it is a bad sign. Xen requires recompiling the Linux Kernel. There must be a better way.

And there is. VirtualBox hosts on Windows, Ubuntu [and other Linux flavors] and OS/X. And it guests those systems too.

Windows Host, Ubuntu Guest

I started with a Windows Vista host and Ubuntu 11.04 Guest. VirtualBox installation is quite simple, and configuration is completely GUI driven. I’m not going to cover it in detail, there are dozens of YouTube videos and web pages out there. I’m just going to mention the stumbling blocks that I ran into.

Here is the VirtualBox user interface:

VirtualBox Control Panel

I’ve created one Ubuntu virtual machine and configured it with a 20GB HD, 20MB of video memory with 3D acceleration [2D not supported except for Windows] and a CD/ROM. Beware. My first mistake was to configure a Sata-CD/Rom. After the system would not boot, I went back and tried an IDE CD-ROM and it came right up. So Sata CD/ROMs aren’t supported for booting. Strange.

To get Ubuntu going, an ISO file is “mounted” into a virtual CD-ROM and the guest system is booted. Then you install Ubuntu as you would from the “live” CD. The installation is very quick since the CD/ROM is running at hard drive speeds rather than at CD/ROM speeds. Ubuntu 11.04 installs very quickly.

Once you have done this, you can install the Guest enhancements. These are available in the Ubuntu package manager, but probably the best way to do this is to use the Device menu of the VirtualBox interface. When the documentation mentioned this, it didn’t make sense. Look at the top of the screen for the Device menu and pull it down:

Devices Menu

At the bottom of the left menu you can see the “Install Guest Additions…”. This causes a virtual CD/ROM, which is not a separate download but which comes with VirtualBox, to be mounted on your Ubuntu system. It should show up on the top left of your desktop. An AutoRun prompt like this should appear:

Installing Guest Enhancements

Just choose the default of “Open Autorun Prompt” and follow the instructions to get the latest guest additions. You will need to “reboot” your guest when you are done.

At this point, Shared Folders, Copy/Paste between Host and Guest and other features should work properly. In System >> Preferences >> Monitors you can set the monitor size now:

Monitor Panel

And you can also drag the window to resize it.

Tweak Your Ubuntu

One of the first things I always do to an Ubuntu system is Tweak it. It drives me nuts to have the window control buttons on the left. If you are a Mac user I’m sure that’s fine, but I keep reaching for the wrong side of the window. Install and run Tweak on your new Ubuntu system and then under the Window Manager settings, put the buttons on the right if you want to. With Ubuntu 11.04, this setting is saved as part of the Theme, and if you chose a new theme in System >> Preferences >> Appearance   a popup will ask you if you want to keep your button settings rather than resetting them to follow the theme.

To Unify or Not

Unify is the new user interface for Ubuntu 11.04. Well I’m sure some folks may like it, but I like the “Classic” look introduced in version 9.0x. To get back to an interface that looks more like Windows, you can log out and then choose the window manager style from the login menu. Click on your name and then choose the window manager style from the menu at the bottom of the login screen before you type your password.

Login Menu to set Desktop Manager

Trouble in Theme-dom

I had trouble with my theme showing up as flat rather than rounded. The Ambiance theme looked more like Windows XP or earlier. After a lot of messing around, I found that if you choose “Ubuntu Classic (No Effects)” you get a rounded theme. Now I’m using “Ubuntu Classic” apparently with effects, and it looks fine. Not sure what happened. But No Effects cleaned it up to look rounded and pretty.

Shared Folders

Shared Folders

Now that guest additions are installed on your Ubuntu guest, you can use Shared Folders. But they aren’t as “Automatic” as you might like. Find the shared folders dialog under the devices menu at the top or by right click on the “shared folders” icon at the bottom of the guest screen on the right. Auto-mount does work, but the mounted files don’t show up on your desktop as you expect. Instead, they show up under /media. I put a link on the guest desktop to /media so I can get to my shared folders easily. Use a file explorer to navigate to /media under File System, and then CTRL+LeftMouse drag the media folder to your desktop. That will create a lnk to /media.  You need to reboot the guest after any changes to shared folders so the changes show up on the Guest system. Shared folders don’t clean up. If you remove a shared folder from the shared folders dialog, it continues to show up as an empty folder under /media forever. The folders are mount points apparently and are owned by root so they can’t be deleted by you without doing something special. They shouldn’t cause any problems however, so just leave them alone.

By using a Full access [ uncheck read-only ] shared folder, you can get your work out of the guest machine and back into the host machine. Remember to reboot the guest after any changes to the shared folder list, and just dismiss all those pesky popups that talk about some error or other.

Beware of USB Devices

I tried to plug in a USB thumb drive and then make it available to the guest system using the USB menu of the interface. That hung both the guest VM and the VirtualBox control panel. I had to reboot the Windows host. So unless you are feeling brave, I’d avoid USB devices. Maybe they work, but a Thumb Drive hung my system. Maybe a thumb drive will work fine as a shared folder.

Networking

The virtual machine is given a unique MAC address and VirtualBox runs a NAT router in software to isolate the guest from the rest of your network. I imagine that the VM can be put on your windows network with Samba, but that’s a lot of trouble. I’m just going to stick with shared folders rather than going to the trouble of setting up windows file sharing.

Browsing, downloading and system updates work through the network with no configuration at all. VirtualBox NAT apparently has DHCP to give the guest an address so that it works with no configuration or trouble at all. The NAT is on a 10.x.x.x network. My home network is 192.168.x.x, as most are, so there are no address conflicts.

Development

I’m doing Qt development on my Guest system, so I’ve installed Qt Creator and the SeaPine SCM source control client. They both came up without any issues.

Ubuntu on Ubuntu

My next project will be to run Ubuntu on Ubuntu to provide an isolated testing system. I’ve decided to upgrade my host system to 11.04 first however.

VirtualBox is Great

I recommend VirtualBox as a VM solution for users – for safe banking or surfing – and for developers. Easy to install and trouble free. Sun / Oracle have a great product and the price can’t be beat.

- windy

I have some comments on Debreate:

1. I can’t find a tutorial. Looks like a great program. But it’s not obvious how to use it.
2. I’d like an option that takes a whole tree – like Packin does – and builds the package from that. The features that are present look interesting, but are not clear and may not match my requirements, whereas, the Packin method would seem to work for all requirements.
3. Does Debreate build a .desktop file, or require that you have one? If it builds one that’s great. But I couldn’t get that far since the build failed. Not clear how to do a build, or what those paths are. Error is obviously not very helpful.
4. It’s complex to fill out all the tabs in Debreate, and I’m likely to want to build a package many times to test it. How about the ability to save ALL the information in the tabs to a file. I thought that’s what the control file was until I looked at it. Maybe the control file could contain “Comments” that contained the rest of the information if the control file is for something else. Maybe the control file is used by the package installer, but that was never clear, since the use of Debreate appears to assume that I know all about packages before I start.

Thanks,

ww

Using Ubuntu 10.04 LTS.
Zotac GeForce 9300 Motherboard

attempted to install the [recommended] choice and it failed.

With a previous install, this worked, but then system failed to start graphics when it rebooted. But that system used to have an AMD video graphics driver installed, so I reinstalled the entire system and now this occurs.

How can I clean out the “archives” and try this again?

- windy

Thermaltake SD100 Case

The Jetway Atom D525 based system is running with Ubuntu 10.04.

The goals for the system are:

1. Employ an Intel Atom D525 processor – a high performance dual processor system.
2. Employ an Nvidia ION2 graphics processor designed for high performance netbooks / nettops. With DVI and HDMI display outputs.
3. Support DDR2 memory, so that I could use memory parts I already have rather than purchasing new DDR3 SODIMM memory.
4. Have a nice case with an internal power supply rather than an external power supply.
5. Run Ubuntu.

Jetway JNC98-525E-LF Motherboard

Here is the only motherboard that I could find that meets the goals.

JetWay JNC98-525E-LF Intel Atom D525

The only motherboard that I could find has an external connector for a power supply rather than a 20pin ATX connector. This means that building the system is more complex since I need to adapt the ATX connector to a 12V barrel connector. After an hour on the phone with mouser.com and a few more hours looking up the the other parts, I got the following to make an adapter.

1. A 25mm 12v barrel connector. There are two standards, 21mm and 25mm and no documentation I could find says which the MB has. Even measuring the connector was little help. Luckily I got both and the 25mm was correct.
2. An ATX 20 pin extender cable. I could not find any way to purchase the connectors and pins myself. Mouser.com and other suppliers did not have the right connectors, and it takes an incredible amount of time to sort through all the alternatives.

You can see the final solution for the adapter cable in the photo album of the system. The toggle switch grounds a signal to turn the power supply on. This powers the hard drive, the DVD drive and the 12V rail of the PS leads to the barrel connector to the mother board. Then you press the power switch on the front panel to turn on the motherboard. All the other connections of the ATX connector are just insulated to avoid any shorts.

The case fan that cools the hard drive is driven from the 4pin connector from the PS directly. The slim fan that cools the motherboard is driven from the motherboard case fan connector directly. I notice that the motherboard speeds up and slows the fan depending on the load on the processor.

Other Parts

I had several of the other parts for the system lying around from previous systems or upgrades:

• Memory – I had DDR 2 memory from an upgrade of a desktop. The system is using 2 1GB DDR2 dimms. The jetway mb supports up to 4GB.
• Hard Drive – I assumed that the case would support a 2.5 inch laptop hard drive, but it is designed for a 3.5 inch drive. The system is using a 40GB Seagate 7200 rpm drive. Small, but plenty large enough for Ubuntu.
• DVD Drive – I purchased a refurbished SATA hard drive from Unify.com Panasonic Slim 8x Notebook Dual Layer Serial ATA / SATA DVDRW Drive / Burner, UJ-890A / UJ890A, Black Bezel, Refurbished
• Wireless – Intel 512AN_MMWW2 – On order and not installed yet. Research indicates that this is supported by Ubuntu. I finally found a pair of antennas with pigtails.

Software

The processor has many advanced features.  While the system will work with Windows 7, I’m building this system on the cheap, so I didn’t really want to spring another $100 for a Windows 7 OEM license.

Ubuntu is free and with a little work I’ve got my DVDs playing – most of them anyway – and I’ll have windows file sharing [Samba] working to share files with my other systems. Surprisingly, the processor has AMD64 support and Hyperthreading support so it will run 4 threads at once. I chose Ubuntu 10.04LTS x64 for an OS.

I’m using the new system to do this post of course, with a netcast  from twit.tv running in the background. The netcast is playing using a flash audio player.

Flash movies play flawlessly – although Netflix streaming does not work apparently due to DRM issues. Youtube videos play with no problem.

Bottom Line

I don’t suggest you build a system the way that I did. I had some strange goals that required a lot more work.

To build a system like this, I suggest you check with Logic Supply for the board, and compatible cases and power supplies.

There are other Intel Core i3, i5 and other processors and motherboards from Zotac as well as Jetway. These will make system building much easier. At Logic Supply  you can purchase the system with as much or as little integration and testing as you like. That’s probably the best way to get starting building your own mini-ITX system.

If you want to purchase a completely integrated system, you might want to consider the systems at Zotac.

Enjoy,

Windy

1. Use regionset to set the region code if it’s not set.
2. Use gxine, which is a more robust dvd player application.
3. Now it plays most protected DVDs as well as unprotected ones.

Just installed Ubuntu 10.04 x64 on a mini-ITX system and would like to play DVDs. I’d like to use this as an entertainment system.

It plays non-protected DVDs just fine.

I have followed instructions here:

https://help.ubuntu.com/community/RestrictedFormats/PlayingDVDs

Including the part about chmod chgrp in the trouble shooting part.

But protected DVDs give me this error:

MoviePlayer Error

Here’s the package manager showing what’s installed that might be relevant:

DVD_Packages_installed (click for larger)

Any clues about what might be wrong?

Thanks,

windy

Sure would be nice to insert a camera card and get the photos. And this works for the CF, and Memory Stick slots, but the SD card will not mount.

I’m using a Nikon Coolpix S550 that has an SD card slot and Windows mounts it with no problem. I assume the card is Fat-32. It’s an 8GB card. Could that be the problem? Something along the way doesn’t deal with the size of the card? This KB article says that Fat-32 can support devices as large as 32GB.

SD Card on Windows

SD Card Properties on Windows

Clearly it’s a FAT32 card with a clean FS on it.

SD_Card_Windows_Mounted

Here are the folders on the SD card.

On Ubuntu 10.04

Computer_Browser

The computer browser shows the media slots. Memory Stick and CF cards work fine. SD Card does not show up. Not sure what the next pic means.

SD_Drive_Properties

When I do a Rclick I get a menu with Safely-Remove in it. Does that mean that the computer can see the card?? Let me remove it and see if I still get that..Yep same thing.. So maybe media card slot can’t deal with the large card? Gee…

RClick_On_SDCard

When I choose Safely Remove I get this.

Error_on_Safely_Remove_SD_Drive

So maybe the computer is not really ever seeing the SD card.

So, what do we think is the problem:

1. Ubuntu needs an update or change to recognize the card?
2. The SD card is too big to be recognized by the Media Card Slot.. Let me check that. I have a large CF card..

CF Card 8GB Properties

Clearly the Media Card slot is capable of seeing an 8GB card. Here’s an 8GB CF card that mounted perfectly.

Only the SD card won’t mount.

Odd.

- windy

M350 Case

The new systems are a lot cleaner, if slightly larger. About an inch larger in width and length and about 1/2″ higher.

M350 Case Rear

Here’s one back configuration. But the motherboard below is different.

I looked at several different sites to configure and purchase systems and based on the options and cost, Logic Supply looks like the best bet.

Here are M350 based systems.

and Here are systems based on another case that is slightly larger.

I priced systems based on the Atom n510 dual core system with 2GB memory, a 160GB 7200rpm SATA drive and case fans for cooling.

The wireless will be supplied by a USB adapter as it is with the blue-diamond.

The Jetway motherboard seems like the best choice.

Jetway NF96FL-510

This Jetway MB has quite a few interesting features:

Jetway NF96FL-510 Large

Click for a larger view.

Proclockers has a detailed review of this board.

This looks like an awesome system for about $300 with 2GB memory, and a 160GB HD.

Since Logic Supply is willing to configure Ubuntu for $20, all the support must be built into this OS. I’m confident that this system could be installed with a USB CD-ROM like the Blue-Diamond and since Ubuntu 10.04 supports the Wireless USB Stick out of the box, I’m sure I could move that to the new system.

I’ll consider this for Christmas.

- ww

If you could Google for “Ubuntu Samba Install” and get a page that told you what you wanted to know, then I wouldn’t do this post, but you don’t get a good page. This page is not that helpful. It looks it was written in the dark ages and it does not configure WINS so that you can PING the other systems on your network.

So here’s the real scoop, which is a modified version of this post I did for Gutsy.

First you need to install WINBIND. So use the package manager at SYSTEM > Administration > Synaptic Package Manager. Search for WINBIND and mark for install. This picture shows what you need to have – or at least what I have installed. I think if you search successively for WINBIND, SAMBA, SMBCLIENT and SMB you will find these. Many of the things in this picture are probably dependencies that will be pulled in automatically.

Now you need to edit the /etc/nsswitch.conf file to change the order to allow wins to work.

This change allows winbind to find the other computers on the network. This allows PING to work, which allows you to diagnose issues, and allows SAMBA to find other systems on the network using the wins protocol. You don’t need to restart anything or reboot after you edit this file. When this is working, you should get the following when you use System > Administration > Network Tools > Ping:

Ok, the next step is to configure SAMBA by editing the /etc/samba/smb.conf file. The system that I upgraded worked fine after the upgrade from Gutsy to Karmic because this file was preserved, and because the upgrades [ 4 of them] all preserved the packages already installed. But if you are installing a new system, then you will need to change the smb.conf file since it does not work out of the box, as far as I can tell. Here’s a terminal session that shows what to do to edit the file. I’m not going to describe the whole Sudo thing, you can find that elsewhere.

Notice that Samba needs a restart after any changes to smb.conf. I’m not going to go through all the details like I did last time, you can refer to the previous post.  Here’s a copy of the file that I’m using now.

smb_conf

There is one more thing to do. Since we are using security = user with samba, we must set a samba password for every account that we are going to use with samba. I believe this results from the fact that windows users md4 for password hashing, and passes this hash across the network to authenticate users. Since linux [unix] uses a stronger password hash, you must save the MD4 hash of the password in a samba database to allow authentication for samba. Here’s the process from the other post:

darrell@squall-ubuntu:/etc/samba$ sudo smbpasswd -a darrell
[sudo] password for darrell:
New SMB password:
Retype new SMB password:
darrell@squall-ubuntu:/etc/samba$

Ignore the following material, it is fixed by the above smbpasswd fix.

There are still problems that I cannot solve:

With this configuration I get two way file sharing with Vista x86 x64 and Win xp on the system that was upgraded. But when I installed a new system, and followed these steps, including using exactly this smb.conf file, the newly installed system would not allow Vista x86 or x64 clients to access Ubuntu. Win XP as the client worked just fine. Ubuntu as the client worked for Vista x86, x64 and Win XP. Read only. I only allow read-only file shares on my network to avoid the spread of worms should I get them.

Looking into a Vista x64 Machine

Here’s an example of an error when trying to connect to Ubuntu from Vista.

This is the network as seen from a Vista x86 machine. You can see that both Ubuntu machines, Squall-Ubuntu and Blue-Diamond are visible.

Network as Seen from Vista x86

You can connect to Squall-Ubuntu, but not to Blue-Diamond.

It doesn’t matter whether you put in darrell, or blue-diamond\darrell, you get the same error. But if you connect to squall-ubuntu, which is the upgraded machine, then it works just fine. I have no clue what the differences are between the configurations. Recall that I’m using the same smb.conf file on both machines and that both have the same nsswitch.conf file.

No clue what’s wrong.

But the Ubuntu machines can see all the Windows machines so I can pull files from them if I like. I pulled the pictures from those machines and did this post from Squall-Ubuntu.

So Karmic can play nice with windows, almost. But it’s still not that way out of the box.

- windy

And network file sharing, SAMBA or SMB, works without a hitch with no modifications to the built in configuration. Hurray!!!. You may remember a previous post about Ubuntu Not Playing Nice that showed the modifications that I had to do to BIND and to SMB configuration to get things to work. UPDATE: file sharing worked because I had fixed it in Gutsy. It still DOES NOT WORK OUT OF THE BOX with Karmic Koala.

See this post for how to start to make it work with Karmic [9.10].

Well everything works just fine now. No changes to any of the default configuration files. As you visit the first sites, I had to allow Samba to access the KeyRing and enter passwords, but after that all is well. I use the same login for all my machines, so I only had to enter that login once for it to work everywhere. I have Win XP, Vista x86 and Vista x64 machines so this is good news for almost everyone. BTW, it works to another machine running Gutsy too, which I’m in the process of upgrading.

But there was a small glitch when I did the last upgrade, but I’ll get to that in a moment.

The upgrade process takes you though each of the upgrades in sequence. No skipping ahead. So it takes a while. There are dialogs that tell you about the changes you may have made to configuration files for some components, like SAMBA, so you have to watch for those since they stop the upgrade. At first I keep my changes, but finally decided to see if they had fixed problems and said REPLACE to take the new files. There were only three of those as I recall, SAMBA and a couple of others, like Internet Time and one other that was so obscure that I don’t recall having changed it.

When the upgrades finally finished, the display was left in a strange state. The desktop was too large for the screen, and dragging the mouse panned the desktop around on the screen. This computer has an NVIDIA display controller, and apparently there is a little glitch or two to be worked out with that integration. Here’s a picture of the entire Desktop image as captured with Screenshot.

If you try to set the display size you get an error.

If you say YES at this point, which is what is indicated, then you go to the NVIDIA panel and you can’t fix the panning problem. Here’s the NVIDIA panel.

But this is set correctly to 1600 x 1050 [ which is my monitor size.] But… that doesn’t fix the panning issue.

There is another error with this panel that I don’t understand.

If you save the configuration, you get an error.

Not sure what’s up with that.

So the right way to fix this is to say YES to the first dialog about the graphics driver support and you get the built-in display dialog:

This was set incorrectly to 1900×1200, which caused the panning. By setting the resolution to 1600×1050, all is well. Minor glitch.

By the way, I enabled visual effects in System > Preferences > Appearance > Visual Effects > Extra, and the waving windows are way cool.

The reason for upgrading my Ubuntu is so that I can do Safe Online Banking with no fear of Trojans stealing my banking information. I’m going to be doing all my online banking using Ubuntu now.

Have a good one.

- Windy

All the Windows hype about the “Media Editions” of Windows was never very clear. Apparently the Media Edition contains the features necessary to serve various files to the other entertainment systems in the home. Music and video players can play files from your desktop harddrive via these servers. Now with a new PS3, Media Services is becoming more useful. It will be interesting to play photos and videos from a server. The PS3 only has a 40GB harddrive and the file management features of the PS3 are very primitive.

Summary

TwonkyMedia Server is the best one that I’ve found. Very reasonable price – $39.95US. It runs on both Windows [Vista x64] and Ubuntu Linux with no problem. It is very efficient using very little memory and processor time. It works just fine on my little Blue-Diamond 800MHz VIA system.

Test Cases

The test cases are modest. About 860 images – jpgs 1024×768 on the PC and 1280×1024 on the Linux box. About 250 mp3 files. The images all display on the PS3 from a USB flash key. Almost all the music files play from a data DVD when inserted into the PS3. Some show “Corrupted File” on the PS3 for an unknown reason. Most of the mp3 files play with no problems using WinAMP on a Windows PC. As of today, the PS3 is running version 2.17 of the firmware.

Update: I’ve discovered the source of some, if not all, of the Corrupted File indications.

Using MP3Tag V2.40 I’ve discovered that a few of the files had very strange meta data, and were in an unsupported format. Click on the pic above to see the full size view. Note that the highlighted files have strange bitrates and frequencies. I’m not sure whether this causes the server to trip up, or just the PS3.
After retesting Twonky and gMediaServer after cleaning out the strange files allowed Twonky to sometimes serve the files, but often it tripped up with a 2103 protocol error and basically stopped working after that. gMediaServer still would not serve any of the sanitized mp3 files.

Nero Media Home – Ultra 8

A google search for “PS3 media servers” indicates that Nero Media Home is a media server. But I suggest you don’t waste your time with it. There are several reasons:

• It is very resource intensive, shall we say, taking over 60MB of your precious ram to run the server. This burden requires an indexing service, which is a constant load on the system regardless of whether you are using the server or not.
• It’s not fast in it’s response to serving to the PS3. It takes a very long time to get the list of items to the PS3.
• It causes protocol error reports on the PS3. “DLNA Protocol Error 80710092″ whatever that is.
• The NMH crashes and hangs quite often, esp when you stop and start the server.
• It won’t serve mp3s. You get No Tracks Available on the PS3.
• Photos work somewhat, but are slow.

A Little Blue Linux Box

The little blue Linux box seemed like a good candidate for a server. It now has a wireless adapter – ZyXEL G202 and is running Ubuntu 7.10.

After a little research, gMediaServer seemed like a good server to try. 0.12.0 is built into Ubuntu 7.10. The latest version 0.13.0 supports PS3 explicitly with a profile for PS3 that sets all the media types supported by the PS3. Not sure what else the server knows about the PS3.

When started with the following command line the server serves photos to the PS3 with no problems.

gmediaserver -ieth1 -v1
--file-types='jpg,mp3'
--friendly-name='Blue-Diamond Media Server'
/home/darrell/Pictures/Fantasy_1280
/home/darrell/Music/musicfiles


When running the gmediaserver only requires 1.6MB of memory. It serves photos with no problem and much faster than the Nero system, as observed from the PS3 system. Occasionally a “DLNA protocol error 2103″ appears, but this only appears once or twice when the server starts to display images.

Music files do not work. I get “No Tracks Available” on the PS3. Since neither server will serve music files to the PS3, the problem may be in the PS3. Update: Even the sanitized mp3 files would not show up at all in the PS3.

Twonky Media Server

Twonky Media 4.4.4 is very light weight – only about 4MB of ram total for the two server processes, and has a nice web interface for configuration.

It works very well for photos, and shows music files, but the files will not play. The PS3 tosses a “800100B network error” when you try to play a track, after a very long time of waiting.

Summary

1. Nero Media Home – Ultra 8 version. Photos work. Music doesn’t show any tracks and it tosses 80710092 protocol errors. This thing is 60MB of ram [ can you believe it??] in three processes, and it keeps crashing. So dead in the water as far as I’m concerned.
2. gMediaServer 0.13.0 on Ubuntu 7.10 – 1.6MB of ram. Works great for photos. But again music does not work. Shows no tracks. Occasionally I get 2013 protocol errors.
3. Twonky Media 4.4.4 – Very nice with web config and light weight in memory – two processes of about 4MB total of memory. Photos work just fine. Music tracks show in the list but trying to play a track gets an 8001000B protocol error.

BTW, all the mp3 music files play just fine from a data DVD on the PS3 and on WinAmp on PC. And on the Linux system too BTW.

So, I conclude that the PS3 V 2.17 is broken for media services for playing Music.

Anybody prove me wrong?

• What media server are you using to play MP3 music on your PS3, and where did you get your MP3 file?
• Do we know that the PS3 is picky about it’s MP3 files?
• Why should it be pickier about the MP3 files over the net than it is from a DVD?

Update: This PS3 appears fairly picky about mp3 files, esp when reading files from a MediaServer and the protocol apparently does not recover from a bad file.

I’ve got my systems all file sharing now, but it took some doing since I’m not a Samba expert.

It is a long and sorted tale taking about a week of posts on the Ubuntu forums with lots of missteps along the way, but I’ll cut to the final answer. If you really want to read the post in all it’s gory detail, go to the Very Strange Network Addresses post.

Caveat: I’m not a Linux expert and while I’ve used and coded IP applications for years, my commentary below may be flawed. If you see a mistake, let me know and I’ll be happy to correct it.

Start with Ping
After trying to fire up Samba and letting it go, it was a real mess. So when you do this it’s best to take it in stages.

Since modern Windows machines use file sharing over Tcp/Ip, we should get the machines talking with each other via Tcp first. I would have thought that Ubuntu would come Out of the Box [OOTB] that way, but it doesn’t.

I suggest you start by installing winbind and fixing up your /etc/nsswitch.conf file. Thanks to i_m_bobo for putting me on the right track here. My solution is similar, but not identical to his.

If you are new to installing packages, use System >> Administration >> Synaptic Package Manager and search for winbind. Set it to install and use apply. All new packages are installed this way.

I had to look around a bit to find out how to edit config files on Ubuntu. As you will quickly find, Ubuntu has a philosophy of a locked root account and uses sudo and gksudo commands to perform root command functions from your normal account. After using this a while, I quite like it.

Use sudo for command lines and gksudo for graphics commands. Look up these commands on the web for a full explanation, but here is how you edit your nsswitch.conf file:

darrell@squall-ubuntu:~$
darrell@squall-ubuntu:~$ cd /etc
darrell@squall-ubuntu:/etc$ gksudo gedit nsswitch.conf
darrell@squall-ubuntu:/etc$


The nsswitch.conf file I’m using looks like this:
darrell@squall-ubuntu:/etc$ more nsswitch.conf
# /etc/nsswitch.conf
#
# Example configuration of GNU Name Service Switch functionality.
# If you have the `glibc-doc-reference' and `info' packages installed, try:
# `info libc "Name Service Switch"' for information about this file.
passwd: compat
group: compat
shadow: compat
hosts: files wins mdns4_minimal [NOTFOUND=return] dns mdns4
networks: files
protocols: db files
services: db files
ethers: db files
rpc: db files
netgroup: nis
darrell@squall-ubuntu:/etc$

I added “wins” after files and before dns so that local host names would be resolved by wins if possible before using dns. Without winbind and this change, the host names were being resolved externally by dns, which is bound to give bad addresses.

After this change, you should be able to ping the rest of the windows boxes on your network, whether they are getting their IP addresses via DHCP or they are set to static addresses. I have both types on my network. It’s a good idea to test the pings both ways, of course.

Install Samba and Friends
Now install the various Samba files. These are the ones that I have installed:

Click for a larger view.

Edit Your smb.conf File

I’m using WORKGROUP and not a domain solution.
Here are the changes that I’ve made:

• wins support = no for do not make this machine a wins server.
• Leave wins server commented out since we are not using wins in samba, but rather we are using winbind though dns.
• dns proxy = yes looks like another good thing to do since we are using dns and not wins or netbios to resolve addresses.
• Make sure that your name resolve order contains wins.

Authentication Settings

I would like to use security = user but my windows boxes refuse to connect to my Linux box with this setting. They prompt for a password, but apparently the Linux box does not accept the user / password. Not clear why. I have used encrypt passwords = false and no change.

Use System >> Administration >> Shared Folders to Create Shares

Once you have the machines connecting to each other, you can use System >> Administration >> Shared Folders to create shares. This program modifies smb.conf for you to add shares. Don’t mess with the Advanced tab tho since that may undo some of the above changes.

Apparently every time you make a change to the smb.conf file and save it, samba takes the new settings. No reboots required.

I hope this keeps some of you out of the weeds.

Update: Here’s the fix for security = user to work.

You need to add a password to the separate Samba password database. Use the following for each user and change security = share to security = user.

darrell@squall-ubuntu:/etc/samba$ sudo smbpasswd -a darrell
[sudo] password for darrell:
New SMB password:
Retype new SMB password:
darrell@squall-ubuntu:/etc/samba$


Enjoy
- windy

To security their specifications, Widgets Inc needs to create a private key, a self signed certificate, and then sign their WidgetsSpecs.xml files with the private key. Only the self signed certificate is passed to the application in the field and it is provided in a secure way so that it cannot be compromised. Once this is done then the software application can verify that the WidgetsSpecs.xml files are authentic.

1. Widgets Inc creates a Certificate Authority, using OpenSSL, and a private key of say, 2048 bits so that it is highly secure. 2048 bits of RSA key are the normal suggested strength for computing today. This process of creating a Private Key and Self Signed Certificate is outlined here and will not be covered in detail in this tutorial. The result is this is a private file called WidgetsInc.key which is the private key and will be protected in a very secure manner by Widgets Inc. and the WidgetsCert.crt which is the self-signed certificate which is public and need not be secured.
2. Once these are created, then the WIdgetsSpecs.xml file is created with some extra wrappers to contain the signature. There is an example below.
3. At the Widgets Inc company, in a secure place, the WidgetsSpecs.xml file is signed using the WidgetsInc.key file. This adds a digest or hash value to the xml file which can only be verified with the correct public key from the certificate.
4. When the WidgetsFactory application was built, the WidgetsCert.crt certificate was included with the application in a way so that it could not be compromised. If this crt file can be replaced by a hacker, then any signed XML file can be substituted. There are several ways to secure the crt file: (1) embed the file in the program itself rather than just placing the file on the disk where it can be changed. (2) In addition, embed a hash function of the crt file in the program so that the program can find out if the file has been tampered with.
5. Each time the WidgetsFactory application starts up, it reads the WidgetsSpec.xml file and verifies the signature using the valid crt file. If the CRT file does not pass the hash checks, or the signature does not pass, the WidgetFactory application refuses to make widgets.

Cautions and Caveats
Widgets Inc could decide to spend the money on a trusted certificate from a company like Verisign for this purpose. But these certificates cost money and they expire. When creating a Self-Signed certificate there are no costs and the expiration date can be set to 5 years, if desired.

The private key is protected at Widgets Inc and is not embedded or distributed with the Widget Factory application.

Example Files

These examples were taken in part from the XML Security Library site.

Template File including the Settings to be signed.

Signed XML File

Using xmlsec1 to Sign and Verify the XML files.

darrell@squall-ubuntu:~/code/xmlsigntest$ xmlsec1 --sign --privkey-pem ca.key --output WidgetsSpecs-signed.xml WidgetsSpecs-Template.xml
darrell@squall-ubuntu:~/code/xmlsigntest$ xmlsec1 --verify --pubkey-cert-pem wwcdd.crt WidgetsSpecs-signed.xml
OK
SignedInfo References (ok/all): 1/1
Manifests References (ok/all): 0/0
darrell@squall-ubuntu:~/code/xmlsigntest$


To examine all the files in the example, download widgetsexample.zip.

Some observations:

• This example was performed using Ubuntu 7.10, where xmlsec1 and the other software required is easily installed.
• The software is easily ported to Windows and the libraries have been ported to Windows by Zlatkovic.

  Enjoy,
  ww

  ]]> http://www.windyweather.net/wp/2008/02/06/xml-signatures-to-protect-settings-files/feed/ 0 http://www.windyweather.net/wp/2008/01/10/puppy-on-bluediamond-1/ http://www.windyweather.net/wp/2008/01/10/puppy-on-bluediamond-1/#comments Fri, 11 Jan 2008 01:25:20 +0000 Darrell http://www.windyweather.net/wp/2008/01/10/puppy-on-bluediamond-1/

  Table of contents for blued

  1. Puppy Linux on a Blue Diamond VIA C3
  2. Booting Puppy on the Blue Diamond
  3. Installing Puppy on the Blue Diamond

  I recently purchased a 15″ PhotoFrame for what seemed like a great price of $250US. Of course now they have a WiFi version for $270. But I have a 17″ LCD monitor that wasn’t pulling it’s weight anymore, so I wondered how much trouble it would be to make a PhotoFrame from that.
  
  Seemed like Linux was the way to go, so I looked around for a cheap, small format PC, since it didn’t make sense to run it with an Old Desktop machine. How Klunky is that?? Here is my final solution. I’m going to talk about what to watch for as you try to build one of these for yourself.

  

  After a lot of looking around and being confused by all the options and lack of any support in this space, I found a company that had a clue and would talk to me about my application. The Linux Forums were no help, by the way. Several posts to several different forums got no response as if nobody had ever made Linux run on such devices.

  This is the device I selected: Blue Diamond CV860A. I got the version with 800MHz but fewer Lan ports. I chose the CV860A – 1R80 since it was only $8 more than the slower model. Beware, this device uses “Low Profile” DIMMs. NewEgg had a 4GB flash card and a PC133 512MB DIMM for about $40 each, so I seemed all set.

  Woops – Need to have Low Profile DIMMs

  Until I found that the BlueD required Low Profile DIMMs.. But alas I lucked out and the PC133 was low profile and worked like a champ.
  Here’s what happens with High Profile DIMMs – like the normal ones that you use in Desktops.
  
  Can’t close the case. But low profile DIMMs work just fine:
  

  Loading Linux?? From where?

  The BD will support a 2.5″ IDE drive, but I wanted to run it from a CF card if possible. But how do you get it on there? Turns out the simplest way is to boot from CD-ROM and run an installer. Well, the BD supports a USB CD-ROM, so no problem. Here is the system all hooked up and ready to install:
  

  Ubuntu or not to Ubuntu?
  
  I had installed Ubuntu on a desktop machine and a HD. No problem, well almost no problem. The system set the screen to 800×600 and the installer dialogs were assuming a larger screen, so that was a hassle, but after that the system installed just fine. On the desktop….
  
  But on the blue diamond, it failed to start. It got all the way to the GNOME display manager and then hung. The system on the CDROM would not start. I’ll post this on the Ubuntu forums and see if anybody has any ideas.

  Update: 14 Jan The problem with the Ubuntu install was insufficient RAM. The Ubuntu CD requires 384MB RAM for the install. Once I tried it with 512MB of RAM it worked fine. Ubuntu 7.10 installed without problems on a 38GB IDE 2 1/2″ HD connected to the Blue-Diamond. The BD is supplied with a cable and bracket to hold a standard Laptop form-factor HD. While Puppy works fine, as you will see from the later articles, Ubuntu is a better match to take advantage of the HD and RAM space of the larger system. On the BD, Ubuntu correctly sized the screen for 1280x1024x24, unlike the previous install on a Compaq Presario.

  Continue with the series to read about Puppy Linux installation.

  Next in series
  ]]> http://www.windyweather.net/wp/2008/01/10/puppy-on-bluediamond-1/feed/ 0 http://www.windyweather.net/wp/2008/01/10/puppy-on-bluediamond-2/ http://www.windyweather.net/wp/2008/01/10/puppy-on-bluediamond-2/#comments Thu, 10 Jan 2008 23:34:29 +0000 Darrell http://www.windyweather.net/wp/2008/01/10/puppy-on-bluediamond-2/

  Table of contents for blued

  1. Puppy Linux on a Blue Diamond VIA C3
  2. Booting Puppy on the Blue Diamond
  3. Installing Puppy on the Blue Diamond

  I chose Puppy Linux 3.01 and burned a CDROM. I’ve got Nero 8, so that part was a snap.

  When I booted the CDROM, I got a much better result than for Ubuntu:
  
  
  and then it popped up this:
  
  Looked like it was rolling. Next was the Video wizard:
  
  And then after choosing XORG I got this:
  
  The BD has a limited Video chip. It supports 1600x1280x16, but I needed 24bit color at least for photos. But it turns out that this works fine. And then you get a friendly Test Dialog:
  

  and the test was fine… Two CTRL/ALT/BACKSPACEs to get back to the wizard and
  

  All was well.

  

  Now the next part is installing Puppy on the CF flash card.

  Previous in series Next in series
  ]]> http://www.windyweather.net/wp/2008/01/10/puppy-on-bluediamond-2/feed/ 0 http://www.windyweather.net/wp/2008/01/10/puppy-on-bluediamond-3/ http://www.windyweather.net/wp/2008/01/10/puppy-on-bluediamond-3/#comments Thu, 10 Jan 2008 22:37:45 +0000 Darrell http://www.windyweather.net/wp/2008/01/10/puppy-on-bluediamond-3/

  Table of contents for blued

  1. Puppy Linux on a Blue Diamond VIA C3
  2. Booting Puppy on the Blue Diamond
  3. Installing Puppy on the Blue Diamond

  The next problem is installing Puppy on the CF card.
  
  
  After looking around a little, the installer was right there in the Setup menu. And the choice was pretty clear:

  

  

  Woops Can’t Find the Files.

  
  You would think that the correct choice would be CD in this case, but this fails with an error saying that it can’t find the files.
  

  The problem is that the CDROM is not mounted as the system boots from it. So all you have to do is click the button on the right of the CDROM to mount the device so it looks like the following. At this point the CD choice will work correctly. Perhaps the correct way to do this is to mount the CD before running the installer to avoid the error completely.

  

  When it finds the files, you get the following dialog.

  

  Do nothing was the right choice here, but for a while I got confused and tried something else. But I backed out before actually writing anything funny on the CF card.

  Finally the installation started:
  

  And then I booted it and it ran just fine:
  

  After booting the system and making some changes, I triggered a reboot and it asked if I wanted to save the settings. The size it suggested was 512MB, which seemed pretty large, but apparently what it wants to do is save a squashed file system. Later on I reinstalled Puppy on a 512MB card and reduced the size of the saved file to 64MB and it worked just fine. I’m not clear at this point what is actually saved in that file system. But for the photo-frame application, it works just fine with a 64MB saved size.

  

  Once the settings are saved, the state of the system is written to that file every time you shutdown the system. I’m not even clear on how to cause another save file to be created. But every change you make is now saved when you shut down the system gracefully. Here are some things you will want to change for a Photo Frame application:

  1. Disable the ScreenSaver and Energy saving in Menu>>Desktop>>Gxset.
  2. Change the background from the default Woof Woof using Menu>>Desktop>>PuppyDesktopBackground Image
  3. Run GTKSee graphics application, which is what I use for the slide show, and set the background, slide duration and other settings. Then exit the program cleanly to save the settings.
  4. And any date and time zone settings.

  When you’ve made all your changes, just use Menu>>Shutdown>>Restart to save your settings. This time you will not be asked about a save file and all your settings will be the same after reboot.

  

  So there it is. A Blue-Diamond running Puppy Linux to make a photo frame from a 17″ LCD Monitor. I’ll look into what it takes to run other programs or make changes to the Slide Show program in the future. But for now, problem solved.

  The final CF Flash drive usage was about 165MB including the 64MB save file, so the Puppy Linux system only takes about 100MB of flash space. Amazing for what you get.

  Previous in series
  ]]> http://www.windyweather.net/wp/2008/01/10/puppy-on-bluediamond-3/feed/ 0 http://www.windyweather.net/wp/2006/11/17/problems-installing-video-on-linux/ http://www.windyweather.net/wp/2006/11/17/problems-installing-video-on-linux/#comments Fri, 17 Nov 2006 22:28:08 +0000 Darrell http://www.windyweather.net/wp/2006/11/17/problems-installing-video-on-linux/ I’ve installed video and dvd support as discussed in this article in PCTech101.
  At this point I’ve installed RPMs from the OpenSuse repository. http://software.opensuse.org/download/repositories/KDE:/KDE3/SUSE_Linux_10.1/

  I had to install these rpms manually. YAST refresh of the site would never complete and it would then produce errors that the available RPM could not be found on the site. I downloaded them from the site and then installed them using rpm -Uhv.

  These are the components that I have installed in the KDE mm suite. [click for larger image].
  

  When I use any of the video players: Totum, Kaffein, Xine – the audio plays, but there is no video. Is there something else that I need? I get a black screen. No errors. The configuration for Kaffein indicated no errors.

  Thanks,
  ww

  ]]> http://www.windyweather.net/wp/2006/11/17/problems-installing-video-on-linux/feed/ 0 http://www.windyweather.net/wp/2006/11/09/cvs-kdevelop-cervisia/ http://www.windyweather.net/wp/2006/11/09/cvs-kdevelop-cervisia/#comments Fri, 10 Nov 2006 04:06:18 +0000 Darrell http://www.windyweather.net/wp/2006/11/09/cvs-kdevelop-cervisia/ [Updated 10 Nov 2006]

  I’ve just started learning how to use CVS on Linux with KDevelop, and there are enough gotchas that I thought it might be interesting to share what I’ve learned. I have used lots of source control in the past, but never CVS. RCS [ages ago], QVCS [windows front end for rcs], and VSS with Visual Studio.

  Serious coding on Linux means that I need source control, so I had a look at what’s available. CVS seems to be the long-time standard for open-source projects. But SubVersion is new on the scene, relatively, so I took a look. But after a little study of a few doc pages, including this one, it looks like SubVersion has the nasty habit of suggesting, if not requiring, that your directory tree look in a special way for SubVersion use. That, and the fact that the SubVersion GUI client for Linux looks like it is in its pretty early days, has lead me to choose CVS and Cervisia. Any Open Source code base with a version above 1.5 has got to have seen a fair amount of use.
  
  So, here are my experiences with SUSE 10.1, KDevelop 3.3.5, Cervisia 2.4.5. I chose to build a local repository that is file based rather than a server based repository.

  1. Install Cervisia and CVS. All on the original distro.
  2. Figure out how to create a CVS repository. Turns out that Cervisia Repository >> Create… works. Note that CVSROOT will be created inside of that folder. So don’t end the path in CVSROOT.
  3. At this point you cannot use File>> Open Sandbox. To open a sandbox you must have done an Import and a Checkout..
  4. I was nervous, so I backed up my KDevelop project folder which already was in play. Then use Repository >> Import.
  5. The parameters to Import are a little tricky. The Respository path does not end in CVSROOT so it is
     /home/darrell/Development/CVS in my case, not
     /home/darrell/Development/CVS/CVSROOT.
  6. The module is a name that will be applied to the entire import, so a lowercase project name without spaces and no extension is appropriate. I used khexwin for example. This should be the same lower case name as the project folder.
  7. The working folder for Import is the project folder. For Checkout it will be something different so beware.
  8. I just used wwc and release for the tags and left the rest blank for now.
  9. You should see success when you import your project.
  10. At this point I would suggest you rename your project folder to myprojectORIG and then
  11. do a Repository >> Checkout…
  12. The Repository folder is the same as before
  13. The module is the same as before
  14. The working folder will be the containing folder, not the project folder. So if your project path is
      /home/user/Development/project then you will want to use
      /home/user/Development/ here.
      The project will come from the module name. If you want to change the folder, then you can put a new name in Check out as:. But KDevelop will freak out if you do that, at least I don’t know yet how to recover from a change in the project path. The project will need some adjustment to build if the path is changed.
  15. Don’t forget to check Recursive checkout.
  16. Warning: KDevelop gets very upset if you change the path of a project. There is probably a way to recover after you move a project, but I don’t know what it is. So you will have to check out your project to exactly the same path as you created the project, or all hell will break lose and the project will not build.
  17. After the checkout you should be able to use KDevelop to open the project and build it. All should be well. If the path of the project has changed, use Build >> Clean Project, followed by Build >> Run Automake & Friends and Build >> Run Config.
  18. Cervisia can now do a File >> Open Sandbox… since there are CVS subfolders in the checked out tree. I have not turned CVS support on in KDevelop. It looks like you can check files in/out in the AutoMake panel on the right. I haven’t seen other places that light up with checkin/out menu items.
  19. I just use Cervisia to commit files. If you are working alone like I am, you won’t have to merge or update based on other folks work.

  I had some issues:

  • As I mentioned, KDevelop has problems if you change the path to the project. I’ve reported a BUG and posted a forum topic to get clarification about how to get a project to work after it is moved.
  • When I tried to check in the files after I changed them, I was getting errors about a sticky tag – release – that was used to Import the project. I took a branch to solve this. Use Advanced >> Tag/Branch… But I think a better way would be to just add a new tag rather than a branch. At this point I have merged the branch into the main branch so things look a lot more sane.
  • Be sure and set the Recursive setting when doing a commit so you can just checkin from the top of the project tree.
  • Use Update [?] often from the tool bar to see what you have changed. The coloration of files is pretty obvious and very helpful.

  Looks like CVS / Cervisia is working for me now.

  Good luck,
  ww

  ]]> http://www.windyweather.net/wp/2006/11/09/cvs-kdevelop-cervisia/feed/ 0 http://www.windyweather.net/wp/2006/11/05/hexdisplaywidget-begins-to-work/ http://www.windyweather.net/wp/2006/11/05/hexdisplaywidget-begins-to-work/#comments Sun, 05 Nov 2006 19:57:07 +0000 Darrell http://www.windyweather.net/wp/2006/11/05/hexdisplaywidget-begins-to-work/ I’m working on a Hex Display Widget under KDevelop.

  Here’s a first version that begins to work. The options in the view menu work to change the display grouping.

  ww
  
  KHexWin test program

  ]]> http://www.windyweather.net/wp/2006/11/05/hexdisplaywidget-begins-to-work/feed/ 0