https://bugs.freedesktop.org/show_bug.cgi?id=66963
--- Comment #274 from Kajzer kap3tan@gmail.com --- (In reply to Michel Dänzer from comment #273)
The original description of this report says: "screen becomes blank after grub trying to boot it". Please file your own report.
When it happens screen freeze for a few seconds, then it goes blank for a few seconds, then it comes back with strange artifacts on the screen, system is basically unresponsive, the only thing you can do is a hard reset.
Please run a kernel built from commit 77497f2735ad6e29c55475e15e9790dbfa2c2ef8 (the commit before 02376d8282b88f07d0716da6155094c8760b1a13) for at least a few days to make sure it doesn't happen with that.
That's gonna be a problem, I don't have that image anymore.
Anyway, it doesn't matter, seems like I'm the only one with this issue, or at least the only one reporting it. Main thing is that dpm finally works without problems with profile set to high, except (in my case) problem happens again, but only with kernels 3.17 and above and only when playing games. Could be mesa related somehow in combination with something introduced in kernel 3.17. One thing I can say for sure, with kernels 3.16 and below mesa version doesn't matter, I tried every mesa from 10.0 to 10.6 and this problem never happened. It's something in the kernel but I guess it's very tricky to determine which commit exactly. There are 57 commits between 3.16 and 3.17