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Full Version: cpufreq disabled after suspend-to-ram
MandrivaUsers.org > Advanced Topics > Laptops and Portable Devices
jrohwer
When I suspend to ram (either using kpowersave, or typing "pm-suspend") at the command line and start up my laptop again, cpufreq stops working. I have traced this back to the fact that the symlink
CODE
/sys/devices/system/cpu/cpu1/cpufreq -> /sys/devices/system/cpu/cpu0/cpufreq

which links the cpufreq settings for the 2 processors, has disappeared after the resume. I also cannot create this symlink by hand (I must admit that I have very little knowledge of how sysfs works).

I can still manually change the cpufreq settings for cpu0 with e.g.
CODE
# echo "performance" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

and it affects the clock frequency of cpu0, but for cpu1 it is disabled, and it also doesn't work with kpowersave (presumably because it can't access cpu1).

Has anyone experienced similar things or got a fix for this?

System: Dell Latitude D630 with Intel Core2Duo T7300 processor
OS: Mandriva 2008.0 x86_64 architecture
coverup
Welome to the forum. I have checked my laptop (ThinkPad), and the link is there. I run Mandriva 2008.0, i586 version.
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