Adding "nomodeset" in the option GRUB_CMDLINE_LINUX_DEFAULT of file /etc/default/grub and issuing the command update-grub solved the issue for me.
-- Xorg freeze drm radeon 'Faild to schedule IB' https://bugs.launchpad.net/bugs/588940 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp

