Bug#274965: Same problem with Intel S875WP1-E; it relies on HT also
Hi,
I have the same problem! Unfortunately it is still present in the current
kernel sources (kernel-source-2.6.8-12). Maybe I'll try to use vanilla if
problem is here also. Just after line informing about ACPI a "Unable to
handle kernel NULL pointer dereference at..." line is displayed, and/or in
some cases OOPS occurs. Further, not always the whole OOPS is printed out.
Every boot there is displayed whole text, only partial or even no OOPS at
all... very strange.
But I discovered that this occurs only when HyperThreading enabled and
when using SMP kernels. The both reports above have had SMP kernels
(in .config) and HT support switched on (in the first report it isn't sure
but it's apparent).
So you can fix it by disabling ACPI in kernel compilation (just passing
"acpi=off" doesn't work unfortunately) or by switching off HT in BIOS.
It would be nice when someone with needed experience will try to figure
out the right cause of OOPS. The call stack ends in "acpi_" prefixed
functions, while the cause is probably some page fault (maybe repeated as
I remember from the stack).
Regards,
--
Jakub Horky
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