Re: Frequency scaling not working

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Mikkel L. Ellertson wrote:
Ryan Campbell wrote:
Hi, I have a santa rosa based laptop ( Fujitsu T4220 convertible ) with
at 2GHz processor. In Fedora 8 (and the latest Ubuntu, Mandriva, and
Suse distros) the processor is permanently stuck at 800MHz. Trying to
manually change the frequency and governor using cpufreq-selector and
echoing values in /sys does nothing.

An interesting thing that I noticed is that the frequency scaling does
work for a few minutes after the laptop wakes from sleep, and then goes
back to not working.

I've run out of things to try and I can't figure out if it is a bug or
something I am doing wrong.
Has anyone encountered this or have any ideas?

Thanks,
Ryan

One thing I noticed is that I have to load the acpi-cpufreq module
in order for it to work on my Toshiba. Figuring out why and filing a
bug report is on my todo list, but will probably have to wait until
I update to F8.

Mikkel
Thanks for the idea, but running ' /sbin/lsmod | grep cpu' gives me this:

cpufreq_ondemand       10317  1
acpi_cpufreq                  12365  2

so acpi_cpufreq is loaded. I may need something else loaded, but not that I can find out. Another thing I noticed is that on boot it says cpuspeed starts fine, but after stopping it and running '/usr/sbin/cpuspeed' I get this:

# /usr/sbin/cpuspeed
Error: No speed steps could be determined!
Error: No speed steps could be determined!

That might be a problem...

Ryan

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