linux-kernel - Re: Regression on GMA965 - display seems to have slow jump changes in brightness

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Date:	Tue, 22 May 2012 14:30:58 +0200
From:	Daniel Vetter <daniel@...ll.ch>
To:	Zdenek Kabelac <zdenek.kabelac@...il.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	intel-gfx@...ts.freedesktop.org, daniel@...ll.ch
Subject: Re: Regression on GMA965 - display seems to have slow jump changes
 in brightness

On Tue, May 22, 2012 at 02:08:46PM +0200, Zdenek Kabelac wrote:
> Hi
> 
> I've updated to 3.4 kernel, and now I'm noticing slight changes in
> brightness on colorful images.
> It seems the change is mostly visibly on  'darker' images i.e. it's
> not really visible on white background.
> 
> When I reboot back to 3.3  kernel - brightness changes are gone - so I
> do not suspect hw fault of my T61 display.
> I guess once in past there has been already such bug, so this problem
> seems to me like reintroducing the same
> problem again.
> 
> xorg-x11-server-Xorg-1.12.1-1.fc18.x86_64
> with SNA intel driver build from git repo.
> T61, 965GM
> 
> Is this a know issue ?
> Is bisect needed ?

You're the first one to report things, so a bisect would be highly
appreciated. Also I'm a bit confused about what you mean by 'changing
brightness'. Can you please try to explain this a bit more?

Thanks, Daniel
-- 
Daniel Vetter
Mail: daniel@...ll.ch
Mobile: +41 (0)79 365 57 48
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