[Nouveau] [Bug 89730] NV50: LightDM GTK+ Greeter Background - inconsistent display

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89730

--- Comment #20 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to andrew p. from comment #19)
> Hi, it's me again. I'm not familiar with all this nouveau stuff, so can you
> tell what is the current status of the bug?
> I received bug reports that look very similar to this. Is there any fix or
> maybe workaround?
> 
> https://bugs.launchpad.net/ubuntu/+source/lightdm-gtk-greeter/+bug/1459079

The status is that it doesn't work :)

I've been looking at the overall logic in nouveau's EXA implementation, and it
looks extremely dodgy wrt CPU access -- I think that PrepareAccess should do an
unconditional PUSH_KICK(push) before the nouveau_bo_wait. That'd be good to
test out.

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