Same issue as
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/825777 Display will not turn on in Oneiric with Llano APUs
As comment #18 pointed out, possible fix: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=cf2aff6eff251b6fbdaf8c253e65ff7c693de8cd
Freedesktop bug reference: https://bugs.freedesktop.org/show_bug.cgi?id=41569
Same issue as
https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/825777
Display will not turn on in Oneiric with Llano APUs
As comment #18 pointed out, possible fix: git.kernel. org/?p= linux/kernel/ git/torvalds/ linux.git; a=commit; h=cf2aff6eff251 b6fbdaf8c253e65 ff7c693de8cd
http://
Freedesktop bug reference: https:/ /bugs.freedeskt op.org/ show_bug. cgi?id= 41569