[Nouveau] [Bug 79823] [NV30/gallium] Mozilla apps freeze on startup with nouveau-dri-10.2.1 libs on dual-screen

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=79823

--- Comment #20 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to comment #19)
> (In reply to comment #18)
> > What happens if you add
> > 
> > screen->base.pushbuf->user_priv = NULL
> > 
> > right before the if (screen->base.fence.current) check in
> > nv30_screen_destroy?
> 
> No effect.

Well, I've been unable to reproduce the "kernel rejected pushbuf" + hang
behaviour, although I've only been testing with a NV43.

However I did observe the issue that I thought I would observe due to that line
not being there... here's a slightly more correct version than my previous
suggestion:

http://patchwork.freedesktop.org/patch/28050/

And another patch which I think is unlikely to affect what you're seeing, but
who knows:

http://patchwork.freedesktop.org/patch/28049/

Assuming these don't help, could you run that glxtest application inside
valgrind, and let me know if you see any illegal accesses. (Note that the first
one of those patches will in fact prevent one such illegal access.)

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