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

From: Allan Duncan (allan.d@bigpond.com)
Date: Wed Sep 11 2002 - 20:56:20 EST


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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