Re: Pressing the power button causes the device to freeze completely (schedutil involved)

[Rafael J. Wysocki]

On Wed, Apr 29, 2026 at 11:17 PM Evgeny Sagatov
<evgeny.sagatov@xxxxxxxxx> wrote:
>
> The PC froze when I pressed the power button.

Well, we need to dig more I guess.

> grep -r . /sys/devices/system/cpu/cpufreq/
> /sys/devices/system/cpu/cpufreq/schedutil/rate_limit_us:240
> /sys/devices/system/cpu/cpufreq/policy0/scaling_min_freq:2000000
> /sys/devices/system/cpu/cpufreq/policy0/scaling_available_governors:performance
> schedutil
> /sys/devices/system/cpu/cpufreq/policy0/freqdomain_cpus:0 1 2 3
> /sys/devices/system/cpu/cpufreq/policy0/scaling_governor:schedutil
> /sys/devices/system/cpu/cpufreq/policy0/cpuinfo_max_freq:2834000
> /sys/devices/system/cpu/cpufreq/policy0/scaling_available_frequencies:2834000
> 2000000
> /sys/devices/system/cpu/cpufreq/policy0/related_cpus:0 1 2 3
> /sys/devices/system/cpu/cpufreq/policy0/scaling_cur_freq:1999759

This kind of calls for some investigation.  It should not be less than
scaling_min_freq, even though this looks like a rounding error.

> /sys/devices/system/cpu/cpufreq/policy0/scaling_setspeed:<unsupported>
> grep: /sys/devices/system/cpu/cpufreq/policy0/stats/reset: Отказано в доступе
> /sys/devices/system/cpu/cpufreq/policy0/stats/trans_table:   From  :    To
> /sys/devices/system/cpu/cpufreq/policy0/stats/trans_table:         :
> 2834000   2000000
> /sys/devices/system/cpu/cpufreq/policy0/stats/trans_table:  2834000:
>       0       844
> /sys/devices/system/cpu/cpufreq/policy0/stats/trans_table:  2000000:
>     843         0
> /sys/devices/system/cpu/cpufreq/policy0/stats/total_trans:1687
> /sys/devices/system/cpu/cpufreq/policy0/stats/time_in_state:2834000 1164
> /sys/devices/system/cpu/cpufreq/policy0/stats/time_in_state:2000000 14130
> /sys/devices/system/cpu/cpufreq/policy0/affected_cpus:0 1 2 3
> /sys/devices/system/cpu/cpufreq/policy0/scaling_max_freq:2834000
> /sys/devices/system/cpu/cpufreq/policy0/cpuinfo_transition_latency:160000
> /sys/devices/system/cpu/cpufreq/policy0/scaling_driver:acpi-cpufreq
> /sys/devices/system/cpu/cpufreq/policy0/cpuinfo_min_freq:2000000
> /sys/devices/system/cpu/cpufreq/policy0/cpuinfo_avg_freq:1999759
> /sys/devices/system/cpu/cpufreq/policy0/bios_limit:2834000

So with the same patch applied (because I think that the one-policy
configuration is suitable for this platform), please capture the
output of

grep -r . /sys/devices/system/cpu/cpufreq/

switch over to the ondemand governor, wait for some time, capture the
output of the above command again and send both.

Also, please send the output of

grep . /sys/firmware/acpi/interrupts/sci*

acquired after doing all of the above.

You may as well check again if the power button works after switching
to ondemand.