Comment # 11
on bug 68178
from Lars
(In reply to comment #6) > * Regardless of DPM enabled or not I get X server crashes within minutes > after a suspend/resume cycle. This happens with kernel 3.11.1 with current > firmware. When I downgrade my kernel-firmware package to 20130114git-1.2.1, > this problem vanishes. But the firmware may be the original cause. With the > old firmware I for example do not have direct rendering or acceleration. I have the same problem with kernel 3.11.6 on Gentoo Linux (stable) with a Radeon HD 4650. Hibernation itself works, but shortly after resuming the machine Xorg crashes with a bus error. Additionally dmesg contains messages about GPU lockups before or after hibernating. Removing the uvd/smc blobs stops Xorg from crashing, but disables direct rendering (including XVideo, …). Note that Xorg does *not* crash after resuming from suspend to RAM. Downgrading to 3.10 (with the same firmware package) does not solve the problem, so I’m back to 3.4.67 for now, which works (both hibernate/direct rendering) for me.
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