[Nouveau] [Bug 59168] [nvc1/Quardro1000M|nvc3/Quadro2000M] graphic garbage/corruption/noise on resume

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=59168

--- Comment #43 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to comment #42)
> Created attachment 94996 [details]
> Remove NVDEV_ENGINE_COPY1 from GF116 to mirror GF106
> 
> Since Michael Weirauch reports this issue has been resolved for his card
> (0xc3, according to his dmesg uploads), and the issue remains on Doug
> Brunner and my card (0xcf), and that both cards once used the same code-base
> and functioned correctly in the Linux 3.4 Kernels, I went on a hunch.
> 
> By changing the 0xc3 definition to 0xcf (forcing my card to be recognized as
> a GF106), I was able to reproduce Michael's suspend/resume success with my
> own card.
> 
> Having discovered that THAT works, it became a mission to figure out what
> was different between the 0xc3 (GF106, working) and 0xcf (GF116,
> non-working).
> 
> By removing the declaration of NVDEV_ENGINE_COPY1 from the 0xcf case, as
> this patch does, the suspend/resume issue no longer affects my card.
> 
> I have submitted this patch for your review, and sincerely hope it is
> accepted. Thanks!

Can you check if the issue still occurs with 3.14-rcX (but without your patch)?
Some changes were made to better respect the engine disables in register 22500.
(Speaking of which, can you grab envytools and do a "nvapeek 22500"... and also
22580)

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