[PATCH] modesetting: Add vblank synchronization support when using Present.

[Keith Packard]

Kenneth Graunke <kenneth at whitecape.org> writes:

> On Friday, December 12, 2014 02:21:57 PM Jason Ekstrand wrote:
>> Another note: With this patch, I had an issue that, when it woke my monitor
>> up after a lock, it was entirely black + cursor.  VT switching didn't
>> help.  I killed gnome shell and, when I came back things were mostly OK
>> except it was tearing like crazy.  Not sure if it's related, but I haven't
>> seen it without the patch.
>> --Jason
>
> I haven't seen completely black, but I've had a lot of instability with this
> patch merged, now that I've used it a bit more.  Closing the lid seems to
> lock up my compositor.  I haven't managed to track it down, but I don't
> think this is mergable as is...

Sounds like we need some of the checks I suggested that you remove
regarding the kernel reporting of MSC values.

Sigh.

-- 
keith.packard at intel.com
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