As taiebot65 said I can reproduce this bug on my Intel graphic card with CD from the weekly ppa. I'm using Lucid (upgraded from Karmic).
-- [i945gm] Opengl is unstable with cairo-dock drmWaitVBlank returned -1 https://bugs.launchpad.net/bugs/428900 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs