Comment 32 for bug 33368

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Swen (kernelpanic-1-0) wrote : Re: X freeze the computer (Dapper - glcore)

Confirmed with Xubuntu on a IBM Thinkpad T21. Adding

Option "ShadowStatus"

to Xorg.conf Device Section did not solve it, but

Option "BusType" "PCI"
Option "DmaMode" "None".