Re: System crash caused by the powernow-k8 kernel module
Teodor,
You could set your machine up for serial console and connect another
machine to capture the messages it generates during the crash.
Sometimes the most useful messages are not logged to syslog but only to
the console.
modinfo powernow-k8 on my machine does not show any parms for debugging.
Some modules can be loaded with a debug option enabled.
Cheers,
Daniel
On Sat, 2007-11-24 at 20:21 +0200, Teodor wrote:
> Hi,
>
> I'm having Debian GNU/Linux installed on my workstation with AMD
> Athlon(tm) 64 X2 4800+ (actually 2.5GHz). From the very beginning after
> the install I was getting multiple system freezes. This happens with
> both linux images from unstable (2.6.22-3-amd64) and testing
> (2.6.22-2-amd64).
>
> Recently I've found that is caused by the powernow-k8 kernel module. I
> can reproduce the problem easily by activating the 'Cool n Quiet'
> option in the BIOS and just reboot the system. The freeze usually
> happens after I'm logged in the X session probably when the load is
> growing.
>
> As a temporary workaround I've blacklisted the powernow-k8 module and
> no more system freezes.
>
> I would like to fill a bug report but I'm afraid I don't have enough
> useful information to give. Can you tell me how can I debug a kernel
> panic/crash?
>
> Thanks for your help.
>
>
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