(In reply to Stefan Dirsch from comment #22) > Thanks for looking into this. I definitely wrote > > dyndbg="file drivers/cpufreq/* +pf" > > in grub during boot. Unfortunately this results in > > # cat /proc/cmdline > BOOT_IMAGE=/vmlinuz-6.0.0-lp153.3.g1195759-default > root=/dev/mapper/system-root resume=/dev/system/swap splash=silent quiet > showopts intel_idle.max_cstate=0 "dyndbg=file drivers/cpufreq/* +pf" > > So the following results might be completely useless. :-( This should be fine, it's just how the kernel handles. Check the dmesg output -- now you must have more lines about cpufreq there.