[Follow-up on debian-laptop. Dropping other lists/newsgroups]
Hi,
On Wed, 2009-04-22 at 00:46 +, s. keeling wrote:
This box is an HP Pavilion dv4, AMD64. [..] it's always running hot. The fan
is
always on. I'd like to have this thing ramp its CPU frequency back to
its minimum when CPU load is close to zero.
What does cpufreq-info (package cpufrequtils) reports, especially, what
governor is in use
which cpu freq driver do you use?
(The available drivers are listed in :
/lib/modules/$(uname -r)/kernel/arch/x86/kernel/cpu/cpufreq/ I don't
know which one is the best for your CPU, but google is your friend).
[..] How do I get it to ramp down its CPU Hz? It
doesn't need to be running at 2.x GHz, so why is it? It should ramp
up to that level when the OS has stuff to do, yes? Am I
misunderstanding something basic here?
Correct. This is what the ondemand governor should do.
I've been through /etc/default fixing stuff there. I've fought with
/etc/cpufreqd.conf, to no result. Restarting CPU Frequency daemon:
cpufreqd failed! Ideas? I would expect this machine to be new
enough to handle cpufreq's latest abilities.
I haven't used cpufreqd for a while. I think it isn't required. Have you
tried to remove it, to return to pristine situation?
Then you could use cpufreq-set -g ondemand to modify the cpufreq
settings, live.
Some extra hints
* Make sure you run the latest (recommended) firmware.
* Try using powertop to make sure that nothing prevents the CPU
from sleeping.
Regards,
Franklin
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