CPUFreq 14.10 – Fix Missing Frequency Options on cpufreq-utils Indicator

14.10cpufreq

I just upgraded to utopic and the indicator for cpufreq-utils just show two cpu frequency options: Power save and Performance.

Before in trusty:

14.04

Now in utopic:

enter image description here

Regards.

Best Answer

If you've got a newer Intel Processor it's because Ubuntu uses a new cpufreq driver called P-State. There are only two governors available for this driver, which are Performance and Powersave.

There are no frequencies listed because you can't actually clock the processor to a specific frequency with newer Core processors. Even if you set it to a specific frequency with the old ACPI cpufreq driver the CPU itself it what sets the frequency on this hardware based on voltage and temperature values.

If you really want to disable this and go back to ACPI cpufeq (older, slower) you need to edit your GRUB config like in this link, only adding intel_pstate=disable instead of intel_pstate=enable.

Run gksu gedit /etc/default/grub

and change the line that says GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

to

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash intel_pstate=disable".

Press Ctrl + X and then Y to save.

then run sudo update-grub and reboot the machine to see the change take effect.

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