[Bug 67276] kernel-3.11 [drm:r600_uvd_ring_test] *ERROR* radeon: ring 5 test failed (0xCAFEDEAD)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=67276

--- Comment #13 from Joshua Cov. <joshuacov at gmail.com> ---
(In reply to comment #12)
> (In reply to comment #11)
> > The bug still appears, so this is not the faulty patch. Obviously it happens
> > during cold boot, otherwise I haven't seen it.
> > 
> > Can you help me to debug this?
> > 
> > I have to say I haven't seen this with kernel-3.9 and all UVD and DPM staff
> > applied. It worked there flawlessly.
> 
> Bisect?

I cannot forcibly trigger the problem. That's why I'm hoping for more detailed
debug messages. Maybe something connected with ring-testing or maybe data
feeding for those rings or anything that hs to do with the ring.

I'm also wondering why the problem don't appear when I restart the pc? Is it
some kind of a racing condition? How can I get the info that's in the ring at
the time the error occurs? How is the ring testing done?

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