Same problem here. Work with sudo stop gdm sudo modprobe -r radeon drm sudo modprobe radeon modeset=0 sudo start gdm
** Attachment added: "Xorg.log.0" http://launchpadlibrarian.net/36721557/Xorg.log.0 -- Radeon module loaded before agpgart https://bugs.launchpad.net/bugs/468413 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