On Tue, 16 Aug 2005, Helge Hafting wrote:
>
> I tried rc6 with DRM turned off. That kernel consistently _died_ when
> trying to start xdm. Xorg logs for both cards ended like this:
>
> (II) LoadModule: "pcidata"
> (II) Loading /usr/X11R6/lib/modules/libpcidata.a
Ok, it does sound like your X server is doing something nasty on the PCI
bus.
> I can retry this with a syncronously mounted /var, if the last lines
> of the Xorg logs might be interesting.
It would be even more interesting if you have a serial console, but if
this is the X server stomping on the PCI bus, you might just have a total
lockup - no oops, no nothing.
One thing that might be interesting is to see if the old working kernel
has a different IO-map than the broken ones. A simple
cat /proc/ioports /proc/iomem > iomaps.kernel-version
and diffing the two might be an interesting thing to try. X has been known
to sometimes just try to re-configure things on its own without telling
(or asking) the kernel.
Linus
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