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Glx-Dock / Cairo-Dock Wiki Recurrents problems
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Recurrents problems

Problems
Our F.A.Q
  • F.A.Q one question one answer



Composite
A black background ?
  • ATI cards : try without OpenGL (cairo-dock -c) => Drivers aren't correct !
  • Intel cards : some of them work with OpenGL (see the follow section) or try without OpenGL (cairo-dock -c) => Some drivers aren't correct !
  • KDE4 : launch systemsettings and do that : Look & Feel --> Desktop --> Desktop Effects --> Enable Desktop Effects
  • Gnome without Compiz (just with Metacity) : launch gconf-editor, and open apps / metacity / general and enable composing-manager.
  • More details : Composite Manager



OpenGL
  • Intel cards : If you know what this is (not for beginners), try to change your xorg.conf file (/etc/X11/xorg.conf), in Monitor section by
    Section "Monitor"
    Identifier "Configured Monitor"
    Option "AccelMethod" "UXA"
    EndSection
    UXA can be a solution but it's not very stable... So, do a backup of your xorg.conf before doing that ! More details : http://www.glx-dock.org/bg_topic.php?t=2652&pos=20 or http://webupd8.blogspot.com/2009/05/graphic-video-drivers-ubuntu-repository.html.
    • It seems that Intel X3100 graphics cards on Ubuntu Jaunty (ONLY!) can support OpenGL. Check two topics here and here.
    • => Cairo-Dock with OpenGL support seems to be fully supported (without doing any modification) on Ubuntu Karmic (tested 13 Aug 2009 with the last Intel drivers (2:2.8.0-0ubuntu2) and the last kernel (2.6.31-5-generic) on an Eeepc701 while having multiple visual effects and remains fluid!)

  • Nvidia cards : Normally, it works well out of box with property drivers.
    • But if you have this warning message : "cannot find -lGL", try this command in a terminal
      cd /usr/lib/ && sudo ln -s libGL.so.1 libGL.so
    • Or if you have that
      NVIDIA: could not open the device file /dev/nvidiactl (Permission not allowed).
      NVIDIA: Direct rendering failed; attempting indirect rendering.
      . It's maybe because your user isn't linked to the video group. With a text editor (gedit, nano, vim, kate, etc.) modify this file /etc/group :
      sudo nano /etc/group
      and add your user name on the video group :
      video:x:XX:USER
      (where XX is a free number (the last one + 1) and USER is your user name.

  • ATI cards : Sorry but already now (2009 May), ATI drivers are just crappy . But there are many reasons to hope and we may have a real driver one day . So wait and use Cairo-Dock without OpenGL. (cairo-dock -c)
    • => Cairo-Dock with OpenGL support seems to be fully supported (maybe with some modifications (look here)) on Ubuntu Karmic (tested Aug 2009 with the last ATI xorg drivers and the last kernel (2.6.31-x-generic))
It seems that Catatyst will support Cairo-Dock soon (news from AMD devs)

  • But you can use Cairo-Dock with a fake transparency in the System menu in the config panel of Cairo-Dock (or by using with a black wallpaper )



(S)MPlayer
If you have any problem with (S)MPlayer :
    • Try to put the video output to gl2 (in the settings of SMPlayer)
    • Or use this command to launch (S)MPlayer:
      export XLIB_SKIP_ARGB_VISUALS=1
      smplayer &



Others apps based on Qt4 like VirtualBox, Skype, VLC
(for VLC, there is a bug only if the option 'Integrate video in interface' is enabled)
It's the same problem that (S)MPlayer.
    • Create a file with the extention ".sh" (launch_virtualbox.sh for example)
    • Add these two lines :
      export XLIB_SKIP_ARGB_VISUALS=1
      virtualbox
    • Change the right execution (Right clic on the file / Properties / Permissions / Execution => or directly :
      chmod +x launch_virtualbox.sh
    • Use this file to execute this app.



Problem with installation / update ?
If you have something like this:
  • trying to overwrite `/usr/share/cairo-dock/default-indicator.png', which is also in package cairo-dock-data
    dpkg-deb: subprocess paste killed by signal (Broken pipe)
  • E: /var/cache/apt/archives/cairo-dock_2.0.0_all.deb: tentative de remplacement de « /usr/share/cairo-dock/icon-mouse.png », qui appartient aussi au paquet cairo-dock-data.


You have to do that :
sudo apt-get remove cairo-dock* --purge
sudo apt-get install cairo-dock cairo-dock-plug-ins




Problem to change/save your configuration ?
It's maybe a permission problem:
chmod u+rwx -R ~/.config/cairo-dock/




Problem with a gauge ?
If you have an output like this:
xterm -e ' wget "http://themes.glx-dock.org/gauges/turbo-night-fuel/turbo-night-fuel.tar.gz" -O "/tmp/cairo-dock-net-file.AfLFEO" -t 2 -T 5'

Just change gauges in your enabled plugins by those beginning with a capital (eg. turbo-night-fuel => Turbo-night-fuel).



Problem with wifi applet ?

It's a problem of right acces to iwconfig command.
With root right (root = sudo for Ubuntu for example), do this commands in a terminal:
chmod u+x /sbin/iwconfig # or "chmod 755 /sbin/iwconfig" if it's doesn't work
ln -s /sbin/iwconfig /usr/bin/iwconfig




Problem when Cairo-Dock is launched automatically ?

If you have some bug when Cairo-Dock is launched automatically at startup and not when it's launched manually : Try to launch it with a delay.

In your session manager (help here), use this command :
sh -c "sleep 15 && cairo-dock -o"

Change any parameters according to your configuration (here we have 15 seconds and Cairo-Dock with OpenGL)



A message at startup

Read it or go here for more help !


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