I did a bit of testing and discovered an interesting point: only Qt4-applications are extremly slow, but not from the start but after about three quarters of a minute to one minute. When I'm using e.g. yakuake or opera, which are both still Qt3-applications, I do not have any problems with GUI-speed, artefacts or anything else.
I also had a look into my X.org-Logs. I could not find anything extraordinary... ** Attachment added: "X.org-log from yesterday's computer usage" http://launchpadlibrarian.net/25989220/Xorg.0.log.old -- runaway Xorg in drmDMA() (radeon) https://bugs.launchpad.net/bugs/347078 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