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[Bug 356381] Re: Kernel High Memory Support 64GB [PAE] incompatible with intel video UXA

To: ubuntu-x-swat@xxxxxxxxxxxxxxxxxxx
From: Dirk <rptq@xxxxxxxxxxx>
Date: Sat, 30 May 2009 10:27:20 -0000
Reply-to: Bug 356381 <356381@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

I have the same problem on my HP laptop with Intel Mobile 4 Integrated
Graphics Controller [8086:2a42] (rev 07). Tested in current Jaunty and
Karmic Alpha 1.

One observation that may be related: the performance problems with the
Intel drivers that have been reported elsewhere seem to affect me only
when I'm running a kernel with the 64G option and PAE enabled. The
"/proc/mtrr fix" (see Bug #314928) helps a lot. When I am running a
generic kernel, I don't have any serious performance problems and no
need to change /proc/mtrr.

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Kernel High Memory Support 64GB [PAE] incompatible with intel video UXA
https://bugs.launchpad.net/bugs/356381
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