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Old 04-19-2011, 08:30 AM   #1
killy9999
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Registered: Feb 2005
Location: Poland
Distribution: openSUSE 11.3/11.4 x64
Posts: 114

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KPowerSave can't set CPU frequency policy


Hi guys,

I have a problems with setting cpu frequency using kpowersave 0.7.3 (I'm using KDE 3.5.10 under openSUSE 11.4). kpowersave displays cpu frequencies properly, but is unable to detect the current frequency policy/governor (it says it's unknown) and can't set the cpu speed - the option is available but attempt to use it results in a warning that the given policy cannot be set. I can successfully set the cpu governor using commands like powersave or cpufreq-set, it's just that kpowersave can't do it.
 
Old 04-19-2011, 11:03 AM   #2
killy9999
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Registered: Feb 2005
Location: Poland
Distribution: openSUSE 11.3/11.4 x64
Posts: 114

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Rep: Reputation: 15
Problem solved. Here's the solution in case any of you encounters the same problem. Everything seems to have been caused by Polkit/Hal interaction. In /etc/Polkit/Polkit.conf I added:

<match action="org.freedesktop.hal.power-management.cpufreq">
<return result="yes"/>
</match>

You man add <match user="yourusername"></match> to restrict access to particular user. Previously I had problems with mounting removable devices - this also required extending Polkit policies.

You may also use polkit-actions to list available Polkit entries.
 
  


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