Comment # 2 on bug 1203748 from Takashi Iwai

The question is which configuration really matters and what changed the setup.
I suppose you're using XFCE?  Do you run thermald?  Or it's only with upowerd?

As a test, you can try to change the cpufreq governer, manually writing to
/sys/devices/system/cpu/cpu*/cpufreq/scaling_governor file, e.g.
  # echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
and so on for each CPU.

The default value for the recent Intel CPUs is powersave, IIRC.

About the cpufreq, Arch has a nice web page:
  https://wiki.archlinux.org/title/CPU_frequency_scaling