[Nouveau] [Bug 75464] [nv4e] [vdpau] causes hangs

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75464

--- Comment #1 from Ilia Mirkin <imirkin at alum.mit.edu> ---
I think the right move here is to just disable nv4x in vdpau entirely until
somehow has time to take a look at what's going on. VDPAU doesn't provide hw
decoding for nv4x anyways at this point, and the presentation stuff isn't
_that_ useful when you don't have the video decoding bits.

Unfortunately I'm not quite sure how to do that... should
vdpau-nouveau/target.c look at the returned screen, cast it to a nouveau_screen
and check the chipset? Not sure if that'd be considered an abstraction
violation. Also unsure what one could add to st/vdpau for this, as nv4x
_should_ be able to support the presentation bits of vdpau, it just... doesn't.

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