The computer they prefer!
The most frequent issues you may encounter with DoudouLinux are listed on this page. This does not at all mean that they happen often –DoudouLinux is generally working well– but rather that they are the most well-known! Please note that you can use our tool to report a hardware issue if your problem is networking, display or sound.
A very large majority of computers can start a system on CD spontaneously; however, depending on the way yours is set up, it may happen that you cannot launch DoudouLinux. The reasons may be the following.
For the second case, we can give the following helpful clues:
Before the splash screen showing the start progress is displayed, you may see error messages, such as, “Splashy: cannot connect to server”. This is not a fatal error and you can ignore them. Indeed the splash screen should appear sooner in the boot process but, as these messages are indicating, a minor issue prevents it and delays the splash screen.
You’ve heard the boot music but you end with a black screen and kind of console prompt? This means that the video driver has not been correctly detected or does not correctly handle your hardware. Please refer to the section Manual tuning of the page Screen settings to find information to solve your issue. If you find a more recent version of DoudouLinux that works (for example the development version), you can send us a hardware issue report to let us diagnose your problem.
It may happen that the system sound configuration is not achieved before the boot music is started. Most likely this will happen on old equipment running DoudouLinux from CD. Try to install DoudouLinux on it!
This kind of message means that the system cannot read the CDROM. Depending on the CD area on which these messages are happening, the system can be blocked or can succeed in starting though; however, the CD is not being correctly read and going on this way is not recommended. The reasons can be the following:
Unfortunately, we cannot offer you much more help, than to try again.
This is a known problem due to the way quite recent Windows® systems are configuring hard disks. On large disks, it is frequent to have a disk format called NTFS instead of FAT. DoudouLinux is currently not able to write on NTFS but only on FAT. You may then be concerned if you are using a quite recent Windows® or if you are using an USB hard disk. Indeed, USB hard disks are generally using the Windows® NTFS format, which is not able to read any format except its own. The only solution is thus to use a standard USB key formatted (or re-formatted) with FAT32.
If you believe that the resolution of your screen is not the expected one, try to press Ctrl + Alt + Backspace . This will restart the DoudouLinux video system and will lead you back to the menu of activities. It may also happen that DoudouLinux is not correctly detecting the screen or the video card at the first attempt. If nothing has improved and your computer is recent, your video chip is probably not correctly detected. It may also happen that your screen is not correctly detected; however, there is no simple method to improve resolution in this case.
Note: DoudouLinux is trying to select a screen resolution for which the refresh rate is greater than 70 Hz on CRT screens. It is then possible that DoudouLinux did not choose the maximum resolution that is written in your screen manual. This constraint makes it possible to avoid a poorly focused, blinking image which may quickly lead to tired eyes or even head aches…
This is a known upstream mistake: when the file manager is showing and you plug in a USB storage device, it is often displayed twice on the left side of the file manager. If you try to use one of both, the file manager will surely end frozen, it is then recommended to close and launch it again.
DoudouLinux is tuned to automatically configure networking using the first network card found. Therefore there are several possible explanations in case of no network connection:
If you are in the later case, you will have to wait for the release of October 2011 which will ship fresher drivers for networking hardware.
Similarly to network cards, DoudouLinux is tuned to automatically setup sound using the first audio card found. In case sound is not functioning, there are three possible explanations:
In any case, please, first try to change sound volumes and the sound output before complaining about sound not working!
DoudouLinux native support for webcams is good but not perfect! Most webcams should work as soon as plugged without any action, but a few of them, generally the most recent ones, may not function. You may, in this case, have to wait for the release of August 2011 which will ship fresher drivers for webcams.
When released, Linux is natively shipped with almost all of the existing hardware drivers for Linux . The older the release date, the more likely that recent hardware may not be perfectly handled. The problem is that hardware providers often do not provide Linux drivers on their website (and adding an external driver is generally a technical operation anyway). This why we rather recommend to wait for a newer version of DoudouLinux instead…
Sometimes icons in the top right panel are not displayed while entering the most advanced activities (see the screenshot below). We still do not know the reason so we can just propose a workaround: pressing
Alt+F5 (hold the Alt key then press the key F5). This will restart the panel and should redraw it correctly.
It may happen that an application started full screen does not set the screen back to its previous settings after closing it. To go back to the standard settings, you have two solutions:
For the second method, if you are in the activity “Whole DoudouLinux”, you need to click on the tab “Tune” then on “System”. If you are not in this activity or cannot see this tab, press the keys Alt + F2 to show the command launcher. You can then type lxrandr in the text area then Enter to start lxrandr.
Both these applications require 3D graphics functionalities, which in turn requires a 3D graphics card. As of writing, DoudouLinux is only able to activate these functionalities for 3D graphics chipset from the brands Intel and ATI . If you have an nVidia card, it will not be natively handled for 3D but for 2D only graphics; however, installing 3D specific drivers makes it possible to have these cards run 3D graphics. Some technical operations are nonetheless required if you want to have your 3D driver back at each DoudouLinux start. These operations have unfortunately neither been written nor tested.
There is a bug in the media player Totem which makes it stop playing music when pressing the forward or backward button. This is only happening with MIDI files, whose name is ending with the extension mid (eg.
La-truite.mid). Indeed MIDI files are not standard audio files. They contain the music notes to be played instead of the resulting sound. This is why Totem may behave differently with MIDI files.
Stopmotion currently only handles the free and open video standard OGG in DoudouLinux. This is not a limitation of Stopmotion but a design choice of DoudouLinux. There are several reasons which lead us make this choice:
As a result Stopmotion in DoudouLinux is always using a file extension ovg (OGG video), even if you put a mov or mpg. If you want to convert this file into another format, please install the required conversion software on another computer or on an installed DoudouLinux. You can have a look at VLC, Mplayer or Ffmpeg.
There is a known issue with the stop button in Songwrite: it doesn’t stop the music anymore. You can try to use the space bar or the menu entry “stop” instead.
This is currently an issue in Songwrite when using the staff visualization mode. For an unknown reason, at least sharp (♯) and flat (♭) signs are not correctly displayed but replaced with squares. The issue is also happening while exporting the music score to PDF.
If applications or activities Pysycache, Childsplay and Gcompris are not working, this is most likely because DoudouLinux did not correctly detect your video system. You can just press simultaneously the keys Ctrl, Alt and Backspace to restart the video system. If this does not do anything and your computer is very recent, this is likely because DoudouLinux does not support your hardware perfectly, yet.
If you feel sufficiently at ease with your computer, you can try to use a command of DoudouLinux to force the use of a video driver (which requires that you know which one is the correct one…). For example to force the driver intel, you have to type in the console the following command:
sudo video-driver intel
NB: this command is currently a one time command! Using it a second time with another value does not remove the first value used…
Please consider that this is not really an issue :). Concerning the name, yes we are already aware of a possible confusion in the USA. However please note that not only the orthography is not identical, but the pronunciation too for Americans. Of course you could try to pronounce it like the French or the Chinese word but, for sure, if you tell your kid to go doodoo Linux on the computer, you may have really bad surprises as a result! ;) You may know that having a short word, easy to pronounce that sounds good in every language on the earth is really a huge task if not impossible…
 If your computer is starting too quickly and you wish to frequently use DoudouLinux, please note that it is usually possible to slow down the startup by activating a test in the machine [BIOS?].
 The large key with an arrow going to the left
 Insofar as providers are providing a driver directly to the Linux project, which is not the case of nVidia, for example.
 This is not due to commercial agreements(!) but due to the fact that Intel and ATI are actively taking part in the Linux development, unlike nVidia. Things may change in the coming years though.
 If you are using Linux, almost all the existing video formats are available :).
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