Comment # 126
on bug 66963
from Alex Deucher
(In reply to comment #124) > I've noticed, that while watching youtube videos, sometimes (actually rather > often) everything freezes. Looks like Xorg crash. It tries to recover but > screen freezes, though mouse is working and sound (probably everything else > is alive). > > Dmesg is flooded with messages: > [drm:radeon_cs_ib_chunk] *ERROR* Failed to schedule IB ! > radeon 0000:01:00.0: couldn't schedule ib That's a GPU lock up which may not be related to dpm. I recently fixed an alignment issue with command buffers that may fix these hangs for you. you'll need this patch for libdrm: http://cgit.freedesktop.org/mesa/drm/commit/?id=58d008883165ba35c83041fa9ed84937163d5f76 and this patch for mesa: http://cgit.freedesktop.org/mesa/mesa/commit/?id=a81beee37e0dd7b75422448420e8e8b0b4b76c1e
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