https://bugs.freedesktop.org/show_bug.cgi?id=66963
--- Comment #36 from Alex Deucher agd5f@yahoo.com --- (In reply to comment #35)
By frost flicker I mean that when the radeon kernel framebuffer replaces vesafb during boot the display flickers and "frosts up" (as it does when it's hanging) then flickers back to normal. It's not a big issue tho.
Anyways, after some hours of testing, the only real issue I spotted so far is that the screen gets corrupted and the laptop hangs when waking up from sleep. Didn't try hibernation as I have no swap partition.
By sleep you mean system suspend or dpms off (only displays off)?
Else pretty much everything works, the temperature is stable at 50°C when idle (which is awesome), forcing power modes and levels works.
Going forward to try your new patch now. Do I have to test it in combinaison with the other no-ss one or alone ?
Please try the patch in comment 34 by itself.