Found new clue: if I generate a xorg.conf then set option "accelmethod" "EXA", the "tartan" effect goes away and everything looks good. On the other hand performances are poorer, even in firefox.
Maybe the trouble has to be in XAA method, which seems to be changed from jaunty to karmic. -- screen corruption and segfaults with radeon m6 ly https://bugs.launchpad.net/bugs/421842 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
