Comment # 192
on bug 66963
from Paul Bodenbenner
(In reply to comment #190) > (In reply to comment #189) > > (In reply to comment #188) > > > (In reply to comment #183) > > > > You might also try my 3.14 branch: > > > > http://cgit.freedesktop.org/~agd5f/linux/log/?h=drm-next-3.14 > > > > > > Not sure if there are any important changes in this branch, but so far it > > > looks more stable for me. I haven't seen hangs while video was played, > > > though the week before i got them almost daily. And have seen hand during > > > start up only once for last week. > > > > > > I might be just very lucky this week. > > > > Still don't see hangs, but noticed but FPS is very low on this branch. Half > > Life is like a slideshow, though works fine with vanilla kernel. > > Are you sure you have acceleration enabled, the behaviour you describe > matches what I found when started testing that branch (grep dmesg for > "*ERROR* radeon: ring 3 test failed (0xCAFEDEAD)"). > > If you have that problem you could test the patch I sent in comment 175 ( > attachment 91835 [details] [review] [review]), It will skip initialization of the DMA > ring and enable acceleration again. I've been using it for several weeks, no > hangs yet, works like a charm. Thanks for your patch! I adapted it to the current git state and I will attach it here (hope I made no mistake ;-)). So with that patch the drm-next-3.14 branch works very well: Booted up about 25 times with only 3 hangs. Suspend worked every time. :-) @Alex Deucher: Very good job! Whats wrong with ring stuff. Do we need a new version of xf86-video-ati?! Also can I do anything against the seldom hangs? Best Regards, Paul
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