[Bug 66963] Rv6xx dpm problems

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=66963

--- Comment #190 from Jaime Velasco Juan <jsagarribay at gmail.com> ---
(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), 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.

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