Powerdevil not working

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1 
● plasma-powerdevil.service - Powerdevil
● plasma-powerdevil.service - Powerdevil
● plasma-powerdevil.service - Powerdevil
● plasma-powerdevil.service - Powerdevil
     Loaded: loaded (/usr/lib/systemd/user/plasma-powerdevil.service; static)
     Active: activating (start) since Sun 2023-11-26 12:46:08 EST; 789ms ago
   Main PID: 3448 (org_kde_powerde)
      Tasks: 7 (limit: 19062)
     Memory: 9.8M
        CPU: 467ms
     CGroup: /user.slice/user-1000.slice/user@1000.service/background.slice/plasma-powerdevil.service
             └─3448 /usr/lib/org_kde_powerdevil

Nov 26 12:46:08 TARDIS systemd[1432]: plasma-powerdevil.service: Consumed 1.355s CPU time.
Nov 26 12:46:09 TARDIS systemd[1432]: plasma-powerdevil.service: Scheduled restart job, restart counter is at 14.
Nov 26 12:46:09 TARDIS systemd[1432]: Starting Powerdevil...
Nov 26 12:46:09 TARDIS org_kde_powerdevil[3448]: org.kde.powerdevil: org.kde.powerdevil.chargethresholdhelper.getthreshold failed "Charge thresholds are not supported by the kernel for this hardware"
Nov 26 12:46:09 TARDIS org_kde_powerdevil[3448]: org.kde.powerdevil: org.kde.powerdevil.backlighthelper.brightness failed
Nov 26 12:46:09 TARDIS libddcutil[3448]: Initializing libddcutil.  ddcutil version: 2.0.0, shared library: /usr/lib/libddcutil.so.5.0.0
Nov 26 12:46:09 TARDIS libddcutil[3448]: Library initialization complete.
Nov 26 12:46:10 TARDIS org_kde_powerdevil[3448]: Monitor on device /dev/usb/hiddev3 reports no EDID or has invalid EDID. Ignoring.
Nov 26 12:46:10 TARDIS libddcutil[3448]: busno=4, sleep-multiplier =  1.30. Testing for supported feature 0x10 returned Error_Info[EIO in ddc_write_read_with_retry, causes: EIO]
Nov 26 12:46:12 TARDIS libddcutil[3448]: busno=6, sleep-multiplier =  2.00. Testing for supported feature 0x10 returned Error_Info[DDCRC_RETRIES in ddc_write_read_with_retry, causes: EREMOTEIO(10)]

After doing updates, powerdevil no longer works for me. Secondary display that maybe causing issues is an Apple cinema display. The brightness has never been controllable via software, and I do not care if it is or not… but I need to be able to have power management settings. Can this be blacklisted or something so that powerdevil starts? Is there something else going on here?

Thanks.

2

It’s a known issue and it has already been reported at KDE upstream. For now, the solution is to downgrade the package. :point_down:

sudo pacman -S manjaro-downgrade
sudo manjaro-downgrade powerdevil

Then reboot.

3

What version do I have to downgrade to? Whatever version I downgraded to still doesn’t work.

4

5.27.9, .8, .7… none work. I don’t think downgrading is the solution. Thanks.

5

See if this link helps… :point_down:

6

This seems to have worked. Thank you.

1 Like
7

What exactly? Theres a few different things going on in that thread.

8

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