GUI CPU Speed Selector
So, recently I saw an article about using the "cpufreq-selector" utility to set the CPU scaling speed of my Core 2 Duo. As a person who likes simplicity, I decided it might be useful to have a graphical interface for Ubuntu users who prefer to avoid the command prompt. Here's what I came up with.
First, Ubuntu installs Zenity by default. Zenity is a utility which allows you to integrated graphical elements into shell scripts. Using Zenity, one could create a selection dialog which allows the user to choose the SpeedStep frequency for their CPU. Here's how:
1. Open a new instance of gedit (Applications->Accessories->Text Editor).
2. Enter the following code:#!/bin/bash
CURRENT=`cat /proc/cpuinfo | grep "^cpu MHz.*" | awk -F": " '{print $2}' | sed 's@\.@@g' | uniq`
if [ "${CURRENT}" == "1000000" ] ; then
SETA='TRUE';
SETB='FALSE';
SETC='FALSE';
fi
if [ "${CURRENT}" == "1333000" ] ; then
SETA='FALSE';
SETB='TRUE';
SETC='FALSE';
fi
if [ "${CURRENT}" == "1667000" ] ; then
SETA='FALSE';
SETB='FALSE';
SETC='TRUE';
fi
ans=$(zenity --list --text "Select CPU Speed" --radiolist --column "" --column "Speed" ${SETA} "1.0 GHz" ${SETB} "1.33 GHz" ${SETC} "1.67 GHz") ;
VALUE=1000000
if [ "${ans}" == "1.0 GHz" ] ; then
VALUE=100000;
fi
if [ "${ans}" == "1.33 GHz" ] ; then
VALUE=1333000;
fi
if [ "${ans}" == "1.67 GHz" ] ; then
VALUE=1667000 ;
fi
gksu "cpufreq-selector -f ${VALUE}"
4. Review your CPU steppings for you particular computer. My computer has 3 settings of 1, 1.3, and 1.66 GHz. Yours may differ, but you should easily be able to figure it our using cpufreq-selector and looking at the contents of /proc/cpuinfo.
5. Modify the steppings to suit your computer.
Resources:
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