Re: Cool N' Quiet
root @ Gatsu # modprobe powernow-k8
FATAL: Error inserting powernow_k8 (/lib/modules/2.6.7-6-amd64-k8/kernel/arch/x86_64/kernel/cpufreq/powernow-k8.ko): No such device
This might be what I've been seeing on my 32 bit install on my Athlon64 system. Below are extracts from some emails I've exchanged with hylke@pkedu.fbt.eitn.wau.nl.
So it seems that, for at least our cases, the fix is in 2.6.10 (2.6.9 too?). But Sarge won't be seeing this unless someone makes a backport to Sarge's kernel.
Nick
//----------------
I was just reading your post at
http://lists.debian.org/debian-amd64/2004/09/msg00336.html
I'm currently using an MSI K8T Neo-FIS2R motherboard with an Athlon 64 3200+ processor and am using the Debian kernel image 2.6.8-1-k7. When I modprobe powernow_k8, I get
"""
powernow-k8: Found 1 AMD Athlon 64 / Opteron processors (version 1.00.09b)
powernow-k8: BIOS error: numpst must be 1
"""
which seems to match what you were getting (powernow_k7 says it's not suitable for my cpu).
//----------------
(A bit from his reply)
> I had to hack the kernel source for that.
> in arch/i386/kernel/cpu/cpufreq/powernow-k8.c comment line 639 out:
>
> return -ENODEV;
>
> That will make the detection not stop, but continue anyway.
//----------------
http://kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.10-rc1
<davej@redhat.com>
[CPUFREQ] Work around AMD64 2nd identical PST errata
AMD recently errata'd the definition of the PSB/PST for recent Athlon 64 and Opteron parts. The errata
allows for a second, identical PST for those parts.
The current powernow-k8 driver will not work in PST/PSB mode on those parts because it requires
there be 1 and only 1 PST.
From: Mark Langsdorf
Signed-off-by: Dave Jones <davej@redhat.com>
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