This is an old revision of the document!
Roughly checked this on 14/09/2023. Seems to work (more testers needed) - Pete
Just really quick write up but worked like this:
Installed some relevant tools (check your kernel version some tools are different for later kernels):
sudo apt-get install cpufreq cpufrequtils sudo apt-get install linux-tools-common Maybe? sudo apt-get install linux-tools-5.15.0-27-generic Maybe? sudo apt-get install linux-cpupower Depends on distro used what you have to install, bookworm I think is linux-cpupower... maybe?
For trixie I believe you just need cpufrequtils and linux-cpupower only.
decide on a governor
sudo cpupower frequency-info
passable options listed in that command such as conservative ondemand userspace powersave performance schedutil etc
eg: for powersave
cpupower frequency-set --governor powersave
To check if cpu is no longer scaling monitor your cpu:
watch "cat /proc/cpuinfo | grep MHz"
After reboot changes will be lost. To make a startup script one way is (another option shown elsewhere in this wiki is with systemd, just feel like showing you a second way):
Create script:
sudo nano /root/SetCPU.sh
In this file put this text:
#!/bin/bash cpupower frequency-set --governor powersave
Obviously modify above to correct governor. Now to add script to reboot:
sudo crontab -e
Add this line into the crontab:
@reboot /root/SetCPU.sh
Finally make script executable:
sudo chmod +x /root/SetCPU.sh
Now test by rebooting and checking the CPU with watch command from earlier.
All done :)
