It seems like similar issues have been discovered in bug 640807 so more people are looking at it. When you have the possibility, try booting with the boot option (added to the grub kernel line) radeon.modeset=0 to check if this is a bug in the kernel video driver only.
Also try this, suggested in the other bug report: you can run "sudo touch /var/lib/gdm/gsd-debug-randr" and restart gdm and you will get a debug log /var/lib/gdm/gsd-debug-randr.log with details on what g-s-d is doing Best wishes for your surgery! -- [RV350] Desktop corruption – Screen only shows vertical bands https://bugs.launchpad.net/bugs/643118 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
