[Bug 67878] [NV98] [BISECTED] Hardware freeze after resume from suspend

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=67878

--- Comment #34 from Pontus Fuchs <pontus.fuchs-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
(In reply to comment #32)
> One idea I just randomly had was that there might be a difference in the
> teardown process. For example, in the removed code, nv50_display_fini did
> stuff. In the current code, it's basically empty (well, some small bits in
> nouveau_display_fini).
> 
> It looks like the old code
> 
> (a) blanked each crtc
> (b) sent out a EVO_UPDATE command
> (c) waited for each crtc to hit a vblank
> (d) did something with the cursor (cleared it?)
> (e) waited for some sort of DPMS thing
> 
> It could well be that this now happens elsewhere, but I just wanted to put
> that thought down on "paper".

I tried this idea by doing the following:

1) Checked out 4f6029da58ba9204c98e33f4f3737fe085c87a6f^1 (=
f9887d091149406de5c8b388f7e0bb6932dd621b)
2) Deleted everything in nv50_display_fini

With that change suspend/resume works so I guess the problem is elsewhere.

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