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Thu, 15 Dec 2011

/Linux/CPUfreq: Manual CPU Frequency Control in Linux

In comes Gnome 3, out goes my beloved (out of necessity) CPU frequency applet. It seems Gnome 3 does not do applets, at least not yet. And I have a couple of miscreant laptops that love to overheat under load. One Lenovo is actually almost unusable unless I throttle back the CPU before extended heavy loads like a massive apt-get upgrade.

[1] clued me in to a command-line option to the applet in the cpufreqd package. After installing cpufreqd one must first uncomment the following lines in /etc/cpufreqd.conf:

enable_remote=1
remote_group=root

which basically enables the command-line tools. Now

cpufreqd-get

will list your options, and

is how you choose your CPU speed, and

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies

displays the available frequencies, and

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq

shows the current frequency in effect. And now I can install Gnome 3 on these handicapped machines....

[1] http://www.go2linux.org/how-to-configure-cpufreqd

posted at: 14:04 | path: /Linux/CPUfreq | permanent link to this entry

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Thu, 15 Dec 2011