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:
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.
Usually this is due to the fact that sound data are not loaded quickly enough during the computer boot. 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 DVD. Depending on the DVD area on which these messages are happening, the system can be blocked or can succeed in starting though; however, the DVD 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. You may also need to set the slowest burning speed to prevent as much as possible reading errors to occur.
This is usually due to a DVD media that cannot be perfectly read. The system starts, is running a bit, then for an unpredictable reason, it crashes when opening an application, which requires disk data transfer. Read the previous issue that is similar.
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.
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 a newer release of DoudouLinux that would 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 a newer release of DoudouLinux that would 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, when an application running full screen is closed, the top right panel has changed of place to adapt to the full screen resolution. It should go back to its normal place after few seconds.
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.
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. Pressing the play button after the stop button may also stop the music!
Since DoudouLinux 2.0, this may not be due to video system detection or limitations anymore . Most likely, this should rather be due to your computer RAM memory size: if it is too small, some applications can crash because they require more memory than what is available. Because the LiveCD does not use the available disks to write its own data , the system is not able to get additional memory space using swap. If you are in this case, you probably have interest of installing DoudouLinux definitively since our installer activates swap.
When you have entered your wireless network key, the key manager asks you the a password to store the network key on the machine. This password cannot be changed due to an unresolved issue. It is set to live as in LiveCD, but all lowercase. This password is simple enough to be used by children if you decide to give them autonomy to connect to the Internet. Note however that if your language is using a non-Latin alphabet, you first need to switch to a Latin alphabet using both left Alt and left Shift keys.
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…
First of all, this should not happen if you are using the official DVD or an USB key made using our official USB write tool. We have never encountered this issue using our own tools so we believe this can only happen when using an USB key made with third-party tools. If you are facing this issue, which is the installer is asking you a password and you cannot find any working password, we have no solution to offer. This may be due to incorrect boot options, that the third-party tool would have written onto the key. You should retry using the tools that are shipping within DoudouLinux.
 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 :).
 Some applications like Pysycache and Childsplay crash if the resolution is smaller that 800×600. For this reason DoudouLinux can now use a feature called screen panning to use a resolution 800×600 in a smaller screen. Note however that some applications do not crash but cannot be entirely displayed with a resolution 800×600 either.
 Except for persistence when it has been activated.
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