ACPI is not working
nate at root.org
Tue May 4 22:25:06 PDT 2004
On Wed, 5 May 2004, christian uhrhan wrote:
> > I looked at your dmesg and ACPI is working fine. You can get increased
> > CPU idle power savings by doing:
> > sysctl hw.acpi.cpu.cx_lowest=1
> thx, i'll try it out
You can put that in /etc/sysctl.conf if it works ok. Make sure it works
before doing that though. It should lower the temps with no real
performance hit (unlike throttling).
> > The acpi_cpu driver is not detecting that your system supports throttling.
> > Please post a link to your full ASL:
> > acpidump -t -d > christian.asl
> you can take a look at it at http://ahrlug.dyndns.org/acpi_problem/christian.asl
Your system does not support throttling. It has a 0 for duty_width.
However, it does support ACPI performance states so once the driver is
finished for those, you will be able to step back your clock to save
power/heat. That's a different and better mechanism than throttling
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