KDE powedevil power managment doesn't work / apply settings

Utini · 2023-05-24 07:46:28

Hardware: Thinkpad T14s G3 AMD
Kernel: Latest 6.3 with amd_pstate=active
KDE with powerdevil installed and power-profiles-daemon.service enabled/running.

In the KDE power management settings I have set to change to "Performance" on AC and "powersave" on battery.
When connecting/disconnecting the charger, I can see that the slider in my "energy task bar icon" switches between those settings.
How ever, it doesn't seem like the actually scaling governor / epp settings get set in my system.
With the charger unplugged it still stays in "performance".

cat /sys/devices/system/cpu/cpu*/cpufreq/energy_performance_preference

performance
performance
performance
performance
performance
performance
performance
performance
performance
performance
performance
performance
performance
performance
performance
performance

cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

performance
performance
performance
performance
performance
performance
performance
performance
performance
performance
performance
performance
performance
performance
performance
performance

sudo cpupower frequency-info

                                
analyzing CPU 13:
  driver: amd_pstate_epp
  CPUs which run at the same hardware frequency: 13
  CPUs which need to have their frequency coordinated by software: 13
  maximum transition latency:  Cannot determine or is not supported.
  hardware limits: 400 MHz - 4.77 GHz
  available cpufreq governors: performance powersave
  current policy: frequency should be within 400 MHz and 4.77 GHz.
                  The governor "performance" may decide which speed to use
                  within this range.
  current CPU frequency: Unable to call hardware
  current CPU frequency: 3.03 GHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes
    Boost States: 0
    Total States: 3
    Pstate-P0:  2700MHz
    Pstate-P1:  1800MHz
    Pstate-P2:  1600MHz

ls /usr/lib/modules/$(uname -r)/kernel/drivers/cpufreq/

acpi-cpufreq.ko.zst          amd-pstate-ut.ko.zst  pcc-cpufreq.ko.zst  speedstep-lib.ko.zst
amd_freq_sensitivity.ko.zst  p4-clockmod.ko.zst    powernow-k8.ko.zst

cat /sys/devices/system/cpu/cpu0/cpufreq/energy_performance_available_preferences

default performance balance_performance balance_power power

sudo systemctl status power-profiles-daemon.service

● power-profiles-daemon.service - Power Profiles daemon
     Loaded: loaded (/usr/lib/systemd/system/power-profiles-daemon.service; enabled; preset: disabled)
     Active: active (running) since Wed 2023-05-24 09:21:20 CEST; 24min ago
   Main PID: 725 (power-profiles-)
      Tasks: 4 (limit: 36962)
     Memory: 4.1M
        CPU: 149ms
     CGroup: /system.slice/power-profiles-daemon.service
             └─725 /usr/lib/power-profiles-daemon

Mai 24 09:21:20 S2000 systemd[1]: Starting Power Profiles daemon...
Mai 24 09:21:20 S2000 systemd[1]: Started Power Profiles daemon.

Any ideas on what is wrong?

jl2 · 2023-05-24 18:25:29

I have the same issue.
what I did was a workaround with a script with cpupower, kdialog, passwordless sudo and the command output plasma widget.
then I binded a keyboard shortcut to the widget, which then trigered the kdialog script to change the governor.
If you want I can share the script (note I wrote it for amd_pstate=passive)

Now that I think of it it could be a permission issue, so try it while being logged in from root (my laptop is in the repair, otherwise I would've done it.)

Last edited by jl2 (2023-05-24 18:25:47)

Utini · 2023-05-24 19:49:02

jl2 wrote:

I have the same issue.
what I did was a workaround with a script with cpupower, kdialog, passwordless sudo and the command output plasma widget.
then I binded a keyboard shortcut to the widget, which then trigered the kdialog script to change the governor.
If you want I can share the script (note I wrote it for amd_pstate=passive)
Now that I think of it it could be a permission issue, so try it while being logged in from root (my laptop is in the repair, otherwise I would've done it.)

Hi there, it seems to be an ongoing issue with power-profiles-daemon.
Issue link: https://gitlab.freedesktop.org/hadess/p … issues/107

I switched to TLP 1.5 which supports most stuff now. Full support will be available with TLP 1.6 (currently in Alpha testing).

How ever, a custom script should do it as well but I am not sure how to run scripts automatically on an event as root.
I can add a udev rule but when the script or command needs root, it won't work?

Besides that I am really not sure what will yield better results: TLP or power-profiles-daemon

Last edited by Utini (2023-05-24 19:49:28)

Utini · 2023-05-26 09:14:28

If anyone gets here. I added a fix to the wiki:
https://wiki.archlinux.org/title/Lenovo … Pstate_EPP

Arch Linux

#1 2023-05-24 07:46:28

KDE powedevil power managment doesn't work / apply settings

#2 2023-05-24 18:25:29

Re: KDE powedevil power managment doesn't work / apply settings

#3 2023-05-24 19:49:02

Re: KDE powedevil power managment doesn't work / apply settings

#4 2023-05-26 09:14:28

Re: KDE powedevil power managment doesn't work / apply settings

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