Arch Linux

mutlu_inek

Member

From: all over the place

Registered: 2006-11-18

Posts: 684

Solution for CPU frequency issue when doing suspend to ram

The new kernel 2.6.20 fully supports suspend to ram for my laptop now. The only issue was that the second CPU (core) did not follow the cpu frequency policy set by/for cpufreq. Instead of using the ondemand governor, it was reset to performance.

The solution is really simple. Edit /usr/lib/hal/scripts/linux/hal-system-power-suspend-linux like this:

Before the last line

exit $RET

insert

#Adjust the second CPU to the frequency policy
echo "ondemand">/sys/devices/system/cpu/cpu1/cpufreq/scaling_governor

Edit: I updated the SpeedStep page in the wiki.

Last edited by mutlu_inek (2007-02-17 08:56:35)