Speedstep Support via boot parameter doesn't work ?
Peter Boy
pboy at barkhof.uni-bremen.de
Wed Nov 19 09:12:45 UTC 2003
Fedora has build in support for speedstep technology. Very nice.
The release notes state:
It is also possible to set minimum, maximum, and policy using the
following boot-time parameter:
cpufreq=<min>:<max>:<policy>
I modified my grub.conf as follows:
title Fedora Core (2.4.22-1.2115.nptl) TEST
root (hd0,2)
kernel /vmlinuz-2.4.22-1.2115.nptl ro root=/dev/Volume00/Fedora
hdc=ide-scsi cpufreq=600000:1200000:powersave rhgb
initrd /initrd-2.4.22-1.2115.nptl.img
After booting /proc/cpufreq is empty and lsmod doesn't show
speedstep-centrino. Obviously the boot parameter does not load the
necessary module. Do I miss something? Is it a bug and worth a bug
report?
The only way I found to make it work is to add the necessary commands to
rc.local.
Peter
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