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Ubuntu users!

I have a Intel computer running basically as a HTPC machine for years 24/7 and at a certain point in time the Linux kernel started to use the intel_pstate driver for my i7 Ivy Bridge (I chose such a high-end CPU to an HTPC because it was the most power efficient in lower frequencies). Since then, I lost the ability to fix the CPU frequency in indicator-cpufreq and as this machine stays on all the time I have a higher power consumption than I wanted.

I tried to fix that a few times without success, setting /sys stuff manually included, but in my last try I could finally lower the max frequency using cpupower:

cpupower frequency-set -u clock_freq

My question is: Whats is the best way to run this at boot time in Ubuntu 16.04?

Similar questions I found:

How to permanently set CPU power management to the powersave governor? - CPUFreq is considered deprecated and don't change CPU frequencies with intel_pstate

How to make cpupower not reset after each restart? - This is very close, but since Ubuntu 16.04 uses systemd it doesn't seem appropriate to me to create a legacy SysV service (I don't even know if it works).

https://wiki.archlinux.org/index.php/CPU_frequency_scaling - Arch seems to have a cpupower.service systemd unit, but I failed to find it in Ubuntu.

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Reset to default
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If you still need help, then you can do one of the following:

  • add your code to /etc/rc.local (before exit 0), then enter the command sudo systemctl enable rc-local.service and reboot
  • create a systemd service
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