[Bug 66494] [sna] Output at last pipe stays black

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=66494

--- Comment #16 from Daniel Martin <consume.noise at gmail.com> ---
(In reply to comment #15)
> Next step:
> 
> commit 67a6a4bfd9cd1a861911e76096923bfc652189e2
> Author: Chris Wilson <chris at chris-wilson.co.uk>
> Date:   Tue Jul 2 14:27:03 2013 +0100
> 
>     sna: Hook into crtc_notify rather than ModeSet
>     
>     ModeSet is called after updating each CRTC, unlike crtc_notify which is
>     called after applying all changes. The last is what we need as if we are
>     called too early we detect that the next CRTC doesn't match our
>     expectations and so we disable it, right before applying the desired
>     mode.
>     
>     References: https://bugs.freedesktop.org/show_bug.cgi?id=66494
>     Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> 
> Do you mind repeating your testing and attaching Xorg & dmesg? Thanks.

Sure, with or without --enable-debug=full?


Meanwhile I've got a log with --enable-debug=full. Should I attach it?

And I started to annotate (for better understanding) the log of my randr
client, which has things like crtc and output ids within. Would that help?
(I've verified that the problem exists with xrandr too.)

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