CPU power saving settings from KDE

[Nate Graham]

Hello Yvan,

Plasma more or less supports doing this, using the power-profiles-daemon 
system[1], which integrated with the low-level kernel drivers specific 
to the CPU. If you install the power-profiled-daemon package, you should 
see a "Power Profile" slider appear in your Battery & Brightness widget 
popup, allowing control over the power usage.

It's not exactly what you're looking for, but it should serve the same 
purpose if your hardware supports it. More and more hardware should 
support it over time.

If your hardware doesn't support it, there's a 3rd-party widget called 
something like intel-pstate-settings that I used to use which allows 
control over the CPU frequency and governor directly. Be warned that 
it's quite easy to accidentally configure your CPU to use *more* power 
than before when using these low-level tools, so it pays to do your 
research first.


Nate


[1] https://gitlab.freedesktop.org/hadess/power-profiles-daemon




On 1/2/23 06:37, Yvan Masson wrote:
> Hi,
> 
> This might be a bit off topic, sorry. I have not subscribed to the list.
> 
> Energy efficient software is very important, but adjusting hardware 
> settings to save energy is also a good thing. For example, there is 
> currently no way from KDE to set CPU maximum speed / CPU governor. I 
> believe it is one of the more useful setting with monitor brightness, 
> and reducing CPU speed does not risk to cause weird hardware issues 
> either. I think it is possible from Windows 10/11.
> 
> Regards,
> Yvan
>