This is the dmesg output when the error occurs. (The dmesg from ubuntu-bug is from a successful boot, so this file may be more useful.)
** Attachment added: "fullbaddmesg" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1070677/+attachment/3411166/+files/fullbaddmesg -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1070677 Title: Xorg fails to start because of Radeon Issue To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1070677/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp