Compaq presario CQ50 w/2011.6 fully updated. CPU scaling reports 8 steps
Tried Texstar's cpu scaling thread but no joy. Also read AndrzejL's "Oh no, not anothe cpu ...." thread and checked with:
"cpufreq-set -g ondemand/powersave/etc" various settings but cpufreq-info still showed cpu running flat out so figured the driver or CPU would not support stepping.
Readup on p4-clockmod only supporting performance and pwersave. Also noticed in KDE power settings (panel applet) that ONLY "performance" was available when AC plugged in and "none" when on battery so installed powersave and guidance-power-manager and the "performance" setting and some other options dissappeared in the power applet in panel. What ?
Anyway, removed those packages and reset /etc/sysconfig/cpufreq file to default and ran across powernowd. Installed and all seems to be OK. As I launch apps, the cpu does scale from 750mhz all the way to 1.75 and 2.00 gHz. I think it might miss a few steps but otherwise OK. Also many options that were not available nor functional in KDE panel power applet are now available. Mainly the ability to shutdown on battery "critical" which I am going to try tomorrow. ( Did not work before)
Now I run across another thread stating powernowd no longer maintained and preferred method is "ondemand" governor.
Am I OK running this Intel processor with powernowd?
Any thoughts appreciated.
[UPDATE]: cpufreq-info currently shows:[user02@compaq01 etc]$ cpufreq-info
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to firstname.lastname@example.org, please.
analyzing CPU 0:
CPUs which run at the same hardware frequency: 0
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 10.00 ms.
hardware limits: 250 MHz - 2.00 GHz
available frequency steps: 250 MHz, 500 MHz, 750 MHz, 1.00 GHz, 1.25 GHz, 1.50 GHz, 1.75 GHz, 2.00 GHz
available cpufreq governors: ondemand, conservative, powersave, userspace, performance
current policy: frequency should be within 750 MHz and 2.00 GHz.
The governor "userspace" may decide which speed to use
within this range.
current CPU frequency is 750 MHz.
So obviously something is working. When I launch OO it kicks up to 1.25gHz and opening FF and or Neverball it kicks up to 2.0 ghZ. Maybe leave well enough alone. Just don't want to be missing something. BTW, battery notifications work but shutdown on "battery critical" does not. lid switch does work and battery monitor seems accurate. Will now see if I get longer battery life.