I’ve already tried to set the CPU power governor to “powersave” in the background also runs a powertop-daemon that autotunes the system every time it boots.
Above that, I’ve set the BIOS option “Boot performance mode” to “Max Battery”, but this also doesn’t help.
Is there something I can do against it? I’ve read about people having a 400 MHz idle frequency with a 12th gen Intel CPU on other Linux distributions, but I don’t want to distro hop, because I’m very satisfied with my Arch Linux installation.
@Juuze sorry for confusing you. I believe that setting power-profiles-daemon to power-save mode will disable turbo-boost on the CPU which may cause it to max out at a low frequency like 2.1 GHz. tlp could also be doing this and any other power management tool installed could be doing this also. But, it can also be related to firmware or hardware. Anyway, without your machine in-front of me all I can do is just speculate