[Nouveau] [Bug 42479] piglit/glean/readPixSanity fails - dmesg PGRAPH - TRAP_TPDMA - TP0: Unhandled ustatus 0x00020000

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=42479

--- Comment #6 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to comment #5)
> nouveau.debug=debug and dmesg has entries:
> [342440.398336] nouveau D[  DEVICE][0000:02:00.0][0x80000080][f23fd840]
> illegal class 0xa06f
> [342440.398340] nouveau D[  DEVICE][0000:02:00.0][0x80000080][f23fd840]
> illegal class 0x906f
> 
> I don't know if that is important.

Appears to be a side-effect of how nouveau_chan.c:nouveau_channel_ind works --
it goes down the list of channel classes until it finds one that works. Those
are the nve0/nvc0 class ids (which nvaa obviously doesn't support).

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