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Re: [Xen-devel] mgag200 driver does not work properly with Xen

> )
> - Xorg does not start. "Failed to activate core devices".

I had the same problem some time ago. Reason was that xkbcomp crashed (i think 
when callong mmap) because of a issue with PAT.

It worked for me when i booted the kernel with the  "nopat" option in the 
kernel commandline.

Probably is the issue that is described here 
http://wiki.xen.org/wiki/Xen_Development_Projects#PAT_writecombine_fixup. I 
also had some writecombine error-messages after the failing Xorg-starts.

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