linux-kernel - Re: i835GM flicker on panning

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Message-ID: <523FFC17.1090403@math.tu-berlin.de>
Date:	Mon, 23 Sep 2013 10:30:15 +0200
From:	Thomas Richter <thor@...h.tu-berlin.de>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	intel-gfx <intel-gfx@...ts.freedesktop.org>
Subject: Re: i835GM flicker on panning

Hi Daniel, hi others,

>> On 22.09.2013 22:03, Daniel Vetter wrote:
>>> Hm, that sounds a bit more like the ddx is having fun with rendering.
>>> Have you tried switching the backed from to either SNA or UXA? Also
>>> adding relevant mailing lists ...
>>>
>> No, whether I use uxa or sna makes no difference, same problem. I
>> don't think it's rendering related. The rendering is ok (except for
>> some defects in tuxracer if sna is used instead of uxa).
>
> Can you please test with
>
>         Option "LinearFramebuffer" "true"?

Did. Still flickers. I'm not quite sure, but it seems to me that there 
is at least one change (but allow me to test): If I'm now panning from 
left to right (move the mouse to the right), then the screen is stable. 
If I move it to the left, I get the flicker. Which is pretty strange.

Unless I'm completely mistaken, the tiled mode created flicker no matter 
whether I scrolled left to right or right to left, it just depended on 
the position. Wierd.

Greetings,
	Thomas

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