linux-kernel - [regression] display dimming is slow and laggy

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Date:	Sun, 15 Jun 2008 00:31:36 +0200
From:	Maximilian Engelhardt <maxi@...monizer.de>
To:	"linux-kernel" <linux-kernel@...r.kernel.org>
Subject: [regression] display dimming is slow and laggy

Hello,

I'm using kernel 2.6.26-rc6 at the moment and with it dimming the display is 
slow and laggy. Using kernel 2.6.25 doesn't show this problem.

Here is a more detailed explanation:

I'm dimming my display with the appropriate keys on my laptop (Fn + 
right/left). Till kernel 2.6.25 this has worked without any problems. Now I'm 
using 2.6.26-rc6 and using the keys the display is dimming much slower and 
also laggy. By laggy I mean if I hit the keys for increasing/decreasing 
brightness it starts dimming and when I release the keys after some time it 
still continues dimming for some steps.

My laptop is a Acer Travelmate 661lci and has an Intel 855 chipset.

I'll attach my dmesg output, please tell me if you need any further 
information.

Maxi

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