[xf86-video-intel] recent 2.4.2 version flicker on gma950

[Vasily Khoruzhick <anarsoul@xxxxxxxxx>]

Hi there,

Since I've upgraded my xf86-video-intel driver to 2.4.0 I have problem - 
screen flickers from time to time. I can 100% reproduce it by launching wine 
(i.e. winecfg)

Also after every flicker I get following line in Xorg.0.log:
(EE) intel(0): underrun on pipe B!

Problem can be reproduced with any 2.4.0-2.4.2, but I can't reproduce it with 
2.3.2.

Hardware: Lenovo 3000 n100 laptop, video - integrated gma950
OS: Gentoo 2008.0 with latest updates,
x11-drivers/xf86-video-i810-2.4.2-r2
x11-base/x11-drm-20080710
x11-base/xorg-server-1.5.0

Any suggestions?

Regards
Vasily

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