Re: Linux 2.4.20-pre4 & ff. blows away Xwindows with Matrox G400 and agpgart

From: Nuitari (nuitari@balthasar.nuitari.net)
Date: Thu Sep 12 2002 - 04:12:51 EST


On Thu, 12 Sep 2002, Allan Duncan wrote:

> This is a reissue of an earlier report, and I've since done some more digging.
>
> Up to kernel 2.4.20-pre2 there was no problem, agpgart et al ran fine etc,
> but from 2.4.20-pre4 onwards when Xwindows starts to load these modules
> I am instantly thrown back to a booting machine.
> The same kernels on a VIA MVP3 chipset box with a Matrox G200 are fine.
>
> I have ascertained that any attempt to use agpgart triggers it.
>
> Rather than clutter up the list with lots of log files, I've made a web page at
> http://www.users.bigpond.com/allan.d/bug/Matrox.html
> with all the info I could gather.
>
> Any suggestions of how to improve the error messages around the failure point
> are welcome. Nothing is written into dmesg at the time of failure.
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Might be good to check with a previous bug report I posted if there are
any similarities. My problem is that the kernel panics when opengl is used
when I have some highmem available.

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