Anything interesting in /var/log/Xorg.*.log or .xsession-errors? Might be interesting to look into KDE bugs to see if it happens there as well.
-- X Windows error when running 2.7.4 https://launchpad.net/bugs/52657 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
