Turning off DRI in the xorg.conf also seems to fix this without the performance hit of turning off all acceleration.
-- Radeon xserver shows corrupt display on X startup (IGP330/340/350 chipset) https://bugs.launchpad.net/bugs/188249 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs