Afaik, o applet do Gnome usa cpufreq-selector . Eu acho que este é o comando que está sendo executado sob o capô quando você usa o applet:
sudo cpufreq-selector --governor=performance --freq=2000
Você pode executar o comando diretamente e ver se há alguma diferença no comportamento.
O pacote cpufrequtils fornece utilitários para ajudá-lo a manipular o comportamento de dimensionamento da CPU. Instale o pacote e verifique as opções da sua CPU através do cpufreq-info .
$ cpufreq-info
cpufrequtils 004: cpufreq-info (C) Dominik Brodowski 2004-2006
Report errors and bugs to [email protected], please.
analyzing CPU 0:
driver: acpi-cpufreq
CPUs which need to switch frequency at the same time: 0
hardware limits: 1000 MHz - 1.67 GHz
available frequency steps: 1.67 GHz, 1.33 GHz, 1000 MHz
available cpufreq governors: conservative, ondemand, userspace, powersave, performance
current policy: frequency should be within 1000 MHz and 1.67 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 1000 MHz.
cpufreq stats: 1.67 GHz:0.00%, 1.33 GHz:0.00%, 1000 MHz:0.01% (3526)
analyzing CPU 1:
driver: acpi-cpufreq
CPUs which need to switch frequency at the same time: 1
hardware limits: 1000 MHz - 1.67 GHz
available frequency steps: 1.67 GHz, 1.33 GHz, 1000 MHz
available cpufreq governors: conservative, ondemand, userspace, powersave, performance
current policy: frequency should be within 1000 MHz and 1.67 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 1000 MHz.
cpufreq stats: 1.67 GHz:0.00%, 1.33 GHz:0.00%, 1000 MHz:0.01% (3737)
Em seguida, tente definir a frequência mínima que um governador pode usar com o comando cpufreq-set . Espero que isso seja melhor do que o comando cpufreq-selector .
NAME
cpufreq-set - A small tool which allows to modify cpufreq settings.
SYNTAX
cpufreq-set [options]
DESCRIPTION
cpufreq-set allows you to modify cpufreq settings without having to type e.g.
"/sys/devices/system/cpu/cpu0/cpufreq/scaling_set_speed" all the time.
OPTIONS
-c --cpu <CPU>
number of CPU where cpufreq settings shall be modified.
-d --min <FREQ>
new minimum CPU frequency the governor may select.
-u --max <FREQ>
new maximum CPU frequency the governor may select.
-g --governor <GOV>
new cpufreq governor.
-f --freq <FREQ>
specific frequency to be set. Requires userspace governor to be available and
loaded.
Note que não tenho idéia das desvantagens de fazer isso. Você pode estar diminuindo drasticamente a vida útil da sua CPU ao operar constantemente na frequência máxima.