Bug#515125: general: cpu frequency scalling crashes my system
On Fri, Feb 13, 2009 at 08:13:45PM +0100, Mark Poks wrote:
> i am not sure what exacly causes the problem. it maight be cpufreq, or kernel
> or maybe something else (or CPU Frequency Scalling Monitor applet in GNOME
> which is rather in doubt).
>
> when enabled "AMD Quiet'n'cool" in BIOS (the CPU frequency scalling) and have
> installed CPUFreq package, it very often happens that system crashes totally.
Hi Mark,
I had similar problems with my AMD64 system. Whenever frequency scaling
was enabled the machine would crash within a few hours of operation,
even when it was idle. The kernel would oops a few times before finally
locking up.
I also saw video and database corruption, but generally the system was
stable.
The problem was a BIOS bug. It started when I increased my system RAM to
4 DIMMs. The CPU (AMD64 939 pin x2 4800) can't handle 4 DIMMs at the
full speed of 400MHz; the BIOS is supposed to automatically slow the RAM
down to 333MHz in this case, but that didn't work on my Gigabyte K8NS
Ultra 939. I slowed the RAM down manually and the system is now
perfectly stable.
Maybe something like this is happening to you too. Memory tests did not
show any fault by the way.
Hamish
--
Hamish Moffatt VK3SB <hamish@debian.org> <hamish@cloud.net.au>
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