https://bugs.kde.org/show_bug.cgi?id=499879

--- Comment #7 from Pavel Dobiáš <pavel23...@proton.me> ---
(In reply to Nicolas Fella from comment #6)
> Can you please attach the output of "journalctl --no-pager -b
> --user-unit=plasma-powerdevil"?

Here you can see my output:
```
Feb 12 18:04:32 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:04:32 fedora org_kde_powerdevil[3471]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:04:33 fedora org_kde_powerdevil[3471]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:04:33 fedora org_kde_powerdevil[3471]: Options passed from client:
Feb 12 18:04:33 fedora org_kde_powerdevil[3471]: Applying combined options:
Feb 12 18:04:34 fedora org_kde_powerdevil[3471]: Library initialization
complete.
Feb 12 18:04:34 fedora org_kde_powerdevil[3471]: Watch thread started
Feb 12 18:04:35 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:04:35 fedora org_kde_powerdevil[3471]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:04:35 fedora org_kde_powerdevil[3471]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:04:35 fedora org_kde_powerdevil[3471]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:04:35 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:04:35 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:04:35 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 1.
Feb 12 18:04:35 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:04:35 fedora org_kde_powerdevil[3891]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:04:35 fedora org_kde_powerdevil[3891]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:04:35 fedora org_kde_powerdevil[3891]: Options passed from client:
Feb 12 18:04:35 fedora org_kde_powerdevil[3891]: Applying combined options:
Feb 12 18:04:37 fedora org_kde_powerdevil[3891]: Library initialization
complete.
Feb 12 18:04:37 fedora org_kde_powerdevil[3891]: Watch thread started
Feb 12 18:04:37 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:04:37 fedora org_kde_powerdevil[3891]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:04:37 fedora org_kde_powerdevil[3891]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:04:37 fedora org_kde_powerdevil[3891]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:04:37 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:04:37 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:04:37 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 2.
Feb 12 18:04:37 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:04:37 fedora org_kde_powerdevil[4298]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:04:37 fedora org_kde_powerdevil[4298]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:04:37 fedora org_kde_powerdevil[4298]: Options passed from client:
Feb 12 18:04:37 fedora org_kde_powerdevil[4298]: Applying combined options:
Feb 12 18:04:39 fedora org_kde_powerdevil[4298]: Library initialization
complete.
Feb 12 18:04:39 fedora org_kde_powerdevil[4298]: Watch thread started
Feb 12 18:04:39 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:04:39 fedora org_kde_powerdevil[4298]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:04:39 fedora org_kde_powerdevil[4298]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:04:39 fedora org_kde_powerdevil[4298]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:04:39 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:04:39 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:04:39 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 3.
Feb 12 18:04:39 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:04:39 fedora org_kde_powerdevil[4388]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:04:39 fedora org_kde_powerdevil[4388]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:04:39 fedora org_kde_powerdevil[4388]: Options passed from client:
Feb 12 18:04:39 fedora org_kde_powerdevil[4388]: Applying combined options:
Feb 12 18:04:41 fedora org_kde_powerdevil[4388]: Library initialization
complete.
Feb 12 18:04:41 fedora org_kde_powerdevil[4388]: Watch thread started
Feb 12 18:04:41 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:04:41 fedora org_kde_powerdevil[4388]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:04:41 fedora org_kde_powerdevil[4388]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:04:41 fedora org_kde_powerdevil[4388]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:04:41 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:04:41 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:04:41 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 4.
Feb 12 18:04:41 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:04:41 fedora org_kde_powerdevil[4495]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:04:42 fedora org_kde_powerdevil[4495]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:04:42 fedora org_kde_powerdevil[4495]: Options passed from client:
Feb 12 18:04:42 fedora org_kde_powerdevil[4495]: Applying combined options:
Feb 12 18:04:43 fedora org_kde_powerdevil[4495]: Library initialization
complete.
Feb 12 18:04:43 fedora org_kde_powerdevil[4495]: Watch thread started
Feb 12 18:04:43 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:04:43 fedora org_kde_powerdevil[4495]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:04:43 fedora org_kde_powerdevil[4495]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:04:43 fedora org_kde_powerdevil[4495]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:04:43 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:04:43 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:04:43 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 5.
Feb 12 18:04:43 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:04:43 fedora org_kde_powerdevil[4593]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:04:44 fedora org_kde_powerdevil[4593]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:04:44 fedora org_kde_powerdevil[4593]: Options passed from client:
Feb 12 18:04:44 fedora org_kde_powerdevil[4593]: Applying combined options:
Feb 12 18:04:45 fedora org_kde_powerdevil[4593]: Library initialization
complete.
Feb 12 18:04:45 fedora org_kde_powerdevil[4593]: Watch thread started
Feb 12 18:04:45 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:04:45 fedora org_kde_powerdevil[4593]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:04:45 fedora org_kde_powerdevil[4593]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:04:45 fedora org_kde_powerdevil[4593]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:04:45 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:04:45 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:04:46 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 6.
Feb 12 18:04:46 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:04:46 fedora org_kde_powerdevil[4689]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:04:46 fedora org_kde_powerdevil[4689]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:04:46 fedora org_kde_powerdevil[4689]: Options passed from client:
Feb 12 18:04:46 fedora org_kde_powerdevil[4689]: Applying combined options:
Feb 12 18:04:47 fedora org_kde_powerdevil[4689]: Library initialization
complete.
Feb 12 18:04:47 fedora org_kde_powerdevil[4689]: Watch thread started
Feb 12 18:04:48 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:04:48 fedora org_kde_powerdevil[4689]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:04:48 fedora org_kde_powerdevil[4689]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:04:48 fedora org_kde_powerdevil[4689]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:04:48 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:04:48 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:04:48 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 7.
Feb 12 18:04:48 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:04:48 fedora org_kde_powerdevil[4772]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:04:48 fedora org_kde_powerdevil[4772]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:04:48 fedora org_kde_powerdevil[4772]: Options passed from client:
Feb 12 18:04:48 fedora org_kde_powerdevil[4772]: Applying combined options:
Feb 12 18:04:49 fedora org_kde_powerdevil[4772]: Library initialization
complete.
Feb 12 18:04:49 fedora org_kde_powerdevil[4772]: Watch thread started
Feb 12 18:04:49 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:04:49 fedora org_kde_powerdevil[4772]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:04:49 fedora org_kde_powerdevil[4772]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:04:49 fedora org_kde_powerdevil[4772]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:04:49 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:04:49 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:04:50 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 8.
Feb 12 18:04:50 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:04:50 fedora org_kde_powerdevil[4865]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:04:50 fedora org_kde_powerdevil[4865]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:04:50 fedora org_kde_powerdevil[4865]: Options passed from client:
Feb 12 18:04:50 fedora org_kde_powerdevil[4865]: Applying combined options:
Feb 12 18:04:51 fedora org_kde_powerdevil[4865]: Library initialization
complete.
Feb 12 18:04:51 fedora org_kde_powerdevil[4865]: Watch thread started
Feb 12 18:04:52 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:04:52 fedora org_kde_powerdevil[4865]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:04:52 fedora org_kde_powerdevil[4865]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:04:52 fedora org_kde_powerdevil[4865]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:04:52 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:04:52 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:04:52 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 9.
Feb 12 18:04:52 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:04:52 fedora org_kde_powerdevil[4980]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:04:52 fedora org_kde_powerdevil[4980]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:04:52 fedora org_kde_powerdevil[4980]: Options passed from client:
Feb 12 18:04:52 fedora org_kde_powerdevil[4980]: Applying combined options:
Feb 12 18:04:53 fedora org_kde_powerdevil[4980]: Library initialization
complete.
Feb 12 18:04:53 fedora org_kde_powerdevil[4980]: Watch thread started
Feb 12 18:04:54 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:04:54 fedora org_kde_powerdevil[4980]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:04:54 fedora org_kde_powerdevil[4980]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:04:54 fedora org_kde_powerdevil[4980]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:04:54 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:04:54 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:04:54 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 10.
Feb 12 18:04:54 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:04:54 fedora org_kde_powerdevil[5067]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:04:54 fedora org_kde_powerdevil[5067]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:04:54 fedora org_kde_powerdevil[5067]: Options passed from client:
Feb 12 18:04:54 fedora org_kde_powerdevil[5067]: Applying combined options:
Feb 12 18:04:55 fedora org_kde_powerdevil[5067]: Library initialization
complete.
Feb 12 18:04:55 fedora org_kde_powerdevil[5067]: Watch thread started
Feb 12 18:04:56 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:04:56 fedora org_kde_powerdevil[5067]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:04:56 fedora org_kde_powerdevil[5067]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:04:56 fedora org_kde_powerdevil[5067]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:04:56 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:04:56 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:04:56 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 11.
Feb 12 18:04:56 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:04:56 fedora org_kde_powerdevil[5162]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:04:56 fedora org_kde_powerdevil[5162]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:04:56 fedora org_kde_powerdevil[5162]: Options passed from client:
Feb 12 18:04:56 fedora org_kde_powerdevil[5162]: Applying combined options:
Feb 12 18:04:58 fedora org_kde_powerdevil[5162]: Library initialization
complete.
Feb 12 18:04:58 fedora org_kde_powerdevil[5162]: Watch thread started
Feb 12 18:04:58 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:04:58 fedora org_kde_powerdevil[5162]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:04:58 fedora org_kde_powerdevil[5162]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:04:58 fedora org_kde_powerdevil[5162]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:04:58 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:04:58 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:04:58 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 12.
Feb 12 18:04:58 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:04:58 fedora org_kde_powerdevil[5263]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:04:58 fedora org_kde_powerdevil[5263]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:04:58 fedora org_kde_powerdevil[5263]: Options passed from client:
Feb 12 18:04:58 fedora org_kde_powerdevil[5263]: Applying combined options:
Feb 12 18:05:00 fedora org_kde_powerdevil[5263]: Library initialization
complete.
Feb 12 18:05:00 fedora org_kde_powerdevil[5263]: Watch thread started
Feb 12 18:05:00 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:05:00 fedora org_kde_powerdevil[5263]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:05:00 fedora org_kde_powerdevil[5263]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:05:00 fedora org_kde_powerdevil[5263]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:05:00 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:05:00 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:05:00 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 13.
Feb 12 18:05:00 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:05:00 fedora org_kde_powerdevil[5351]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:05:00 fedora org_kde_powerdevil[5351]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:05:00 fedora org_kde_powerdevil[5351]: Options passed from client:
Feb 12 18:05:00 fedora org_kde_powerdevil[5351]: Applying combined options:
Feb 12 18:05:02 fedora org_kde_powerdevil[5351]: Library initialization
complete.
Feb 12 18:05:02 fedora org_kde_powerdevil[5351]: Watch thread started
Feb 12 18:05:02 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:05:02 fedora org_kde_powerdevil[5351]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:05:02 fedora org_kde_powerdevil[5351]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:05:02 fedora org_kde_powerdevil[5351]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:05:02 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:05:02 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:05:02 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 14.
Feb 12 18:05:02 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:05:02 fedora org_kde_powerdevil[5439]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:05:02 fedora org_kde_powerdevil[5439]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:05:02 fedora org_kde_powerdevil[5439]: Options passed from client:
Feb 12 18:05:02 fedora org_kde_powerdevil[5439]: Applying combined options:
Feb 12 18:05:04 fedora org_kde_powerdevil[5439]: Library initialization
complete.
Feb 12 18:05:04 fedora org_kde_powerdevil[5439]: Watch thread started
Feb 12 18:05:04 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:05:04 fedora org_kde_powerdevil[5439]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:05:04 fedora org_kde_powerdevil[5439]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:05:04 fedora org_kde_powerdevil[5439]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:05:04 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:05:04 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:05:04 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 15.
Feb 12 18:05:04 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:05:04 fedora org_kde_powerdevil[5529]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:05:04 fedora org_kde_powerdevil[5529]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:05:04 fedora org_kde_powerdevil[5529]: Options passed from client:
Feb 12 18:05:04 fedora org_kde_powerdevil[5529]: Applying combined options:
Feb 12 18:05:06 fedora org_kde_powerdevil[5529]: Library initialization
complete.
Feb 12 18:05:06 fedora org_kde_powerdevil[5529]: Watch thread started
Feb 12 18:05:06 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:05:06 fedora org_kde_powerdevil[5529]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:05:06 fedora org_kde_powerdevil[5529]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:05:06 fedora org_kde_powerdevil[5529]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:05:06 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:05:06 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:05:06 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 16.
Feb 12 18:05:06 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:05:06 fedora org_kde_powerdevil[5616]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:05:07 fedora org_kde_powerdevil[5616]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:05:07 fedora org_kde_powerdevil[5616]: Options passed from client:
Feb 12 18:05:07 fedora org_kde_powerdevil[5616]: Applying combined options:
Feb 12 18:05:08 fedora org_kde_powerdevil[5616]: Library initialization
complete.
Feb 12 18:05:08 fedora org_kde_powerdevil[5616]: Watch thread started
Feb 12 18:05:08 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:05:08 fedora org_kde_powerdevil[5616]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:05:08 fedora org_kde_powerdevil[5616]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:05:08 fedora org_kde_powerdevil[5616]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:05:08 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:05:08 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:05:09 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 17.
Feb 12 18:05:09 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:05:09 fedora org_kde_powerdevil[5703]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:05:09 fedora org_kde_powerdevil[5703]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:05:09 fedora org_kde_powerdevil[5703]: Options passed from client:
Feb 12 18:05:09 fedora org_kde_powerdevil[5703]: Applying combined options:
Feb 12 18:05:10 fedora org_kde_powerdevil[5703]: Library initialization
complete.
Feb 12 18:05:10 fedora org_kde_powerdevil[5703]: Watch thread started
Feb 12 18:05:10 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:05:10 fedora org_kde_powerdevil[5703]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:05:10 fedora org_kde_powerdevil[5703]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:05:10 fedora org_kde_powerdevil[5703]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:05:10 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:05:10 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:05:11 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 18.
Feb 12 18:05:11 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:05:11 fedora org_kde_powerdevil[5987]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:05:11 fedora org_kde_powerdevil[5987]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:05:11 fedora org_kde_powerdevil[5987]: Options passed from client:
Feb 12 18:05:11 fedora org_kde_powerdevil[5987]: Applying combined options:
Feb 12 18:05:12 fedora org_kde_powerdevil[5987]: Library initialization
complete.
Feb 12 18:05:12 fedora org_kde_powerdevil[5987]: Watch thread started
Feb 12 18:05:12 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:05:12 fedora org_kde_powerdevil[5987]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:05:12 fedora org_kde_powerdevil[5987]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:05:12 fedora org_kde_powerdevil[5987]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:05:12 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:05:12 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:05:13 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 19.
Feb 12 18:05:13 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:05:13 fedora org_kde_powerdevil[6072]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:05:13 fedora org_kde_powerdevil[6072]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:05:13 fedora org_kde_powerdevil[6072]: Options passed from client:
Feb 12 18:05:13 fedora org_kde_powerdevil[6072]: Applying combined options:
Feb 12 18:05:14 fedora org_kde_powerdevil[6072]: Library initialization
complete.
Feb 12 18:05:14 fedora org_kde_powerdevil[6072]: Watch thread started
Feb 12 18:05:15 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:05:15 fedora org_kde_powerdevil[6072]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:05:15 fedora org_kde_powerdevil[6072]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:05:15 fedora org_kde_powerdevil[6072]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:05:15 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:05:15 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:05:15 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 20.
Feb 12 18:05:15 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:05:15 fedora org_kde_powerdevil[6214]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:05:15 fedora org_kde_powerdevil[6214]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:05:15 fedora org_kde_powerdevil[6214]: Options passed from client:
Feb 12 18:05:15 fedora org_kde_powerdevil[6214]: Applying combined options:
Feb 12 18:05:17 fedora org_kde_powerdevil[6214]: Library initialization
complete.
Feb 12 18:05:17 fedora org_kde_powerdevil[6214]: Watch thread started
Feb 12 18:05:17 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:05:17 fedora org_kde_powerdevil[6214]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:05:17 fedora org_kde_powerdevil[6214]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:05:17 fedora org_kde_powerdevil[6214]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:05:17 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:05:17 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:05:17 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 21.
Feb 12 18:05:17 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:05:17 fedora org_kde_powerdevil[6364]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:05:17 fedora org_kde_powerdevil[6364]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:05:17 fedora org_kde_powerdevil[6364]: Options passed from client:
Feb 12 18:05:17 fedora org_kde_powerdevil[6364]: Applying combined options:
Feb 12 18:05:18 fedora org_kde_powerdevil[6364]: Library initialization
complete.
Feb 12 18:05:18 fedora org_kde_powerdevil[6364]: Watch thread started
Feb 12 18:05:18 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:05:18 fedora org_kde_powerdevil[6364]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:05:18 fedora org_kde_powerdevil[6364]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:05:18 fedora org_kde_powerdevil[6364]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:05:18 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:05:18 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:05:18 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 22.
Feb 12 18:05:18 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:05:18 fedora org_kde_powerdevil[6449]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:05:18 fedora org_kde_powerdevil[6449]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:05:18 fedora org_kde_powerdevil[6449]: Options passed from client:
Feb 12 18:05:18 fedora org_kde_powerdevil[6449]: Applying combined options:
Feb 12 18:05:20 fedora org_kde_powerdevil[6449]: Library initialization
complete.
Feb 12 18:05:20 fedora org_kde_powerdevil[6449]: Watch thread started
Feb 12 18:05:20 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:05:20 fedora org_kde_powerdevil[6449]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:05:20 fedora org_kde_powerdevil[6449]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:05:20 fedora org_kde_powerdevil[6449]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:05:20 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:05:20 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:05:20 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 23.
Feb 12 18:05:20 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:05:20 fedora org_kde_powerdevil[6537]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:05:21 fedora org_kde_powerdevil[6537]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:05:21 fedora org_kde_powerdevil[6537]: Options passed from client:
Feb 12 18:05:21 fedora org_kde_powerdevil[6537]: Applying combined options:
Feb 12 18:05:22 fedora org_kde_powerdevil[6537]: Library initialization
complete.
Feb 12 18:05:22 fedora org_kde_powerdevil[6537]: Watch thread started
Feb 12 18:05:22 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:05:22 fedora org_kde_powerdevil[6537]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:05:22 fedora org_kde_powerdevil[6537]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:05:22 fedora org_kde_powerdevil[6537]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:05:22 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:05:22 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:05:22 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 24.
Feb 12 18:05:22 fedora systemd[2669]: Starting plasma-powerdevil.service -
Powerdevil...
Feb 12 18:05:22 fedora org_kde_powerdevil[6646]:
setHighDpiScaleFactorRoundingPolicy must be called before creating the
QGuiApplication instance
Feb 12 18:05:23 fedora org_kde_powerdevil[6646]: Initializing libddcutil. 
ddcutil version: 2.1.2, shared library: /usr/lib64/libddcutil.so.5.1.1
Feb 12 18:05:23 fedora org_kde_powerdevil[6646]: Options passed from client:
Feb 12 18:05:23 fedora org_kde_powerdevil[6646]: Applying combined options:
Feb 12 18:05:24 fedora org_kde_powerdevil[6646]: Library initialization
complete.
Feb 12 18:05:24 fedora org_kde_powerdevil[6646]: Watch thread started
Feb 12 18:05:24 fedora systemd[2669]: Started plasma-powerdevil.service -
Powerdevil.
Feb 12 18:05:24 fedora org_kde_powerdevil[6646]: org.kde.powerdevil: Handle
button events action could not check for screen configuration
Feb 12 18:05:24 fedora org_kde_powerdevil[6646]: wl_display#1: error 1: invalid
method 5, object kde_external_brightness_device_v1#43
Feb 12 18:05:24 fedora org_kde_powerdevil[6646]: The Wayland connection
experienced a fatal error: Invalid argument
Feb 12 18:05:24 fedora systemd[2669]: plasma-powerdevil.service: Main process
exited, code=exited, status=255/EXCEPTION
Feb 12 18:05:24 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:05:25 fedora systemd[2669]: plasma-powerdevil.service: Scheduled
restart job, restart counter is at 25.
Feb 12 18:05:25 fedora systemd[2669]: plasma-powerdevil.service: Start request
repeated too quickly.
Feb 12 18:05:25 fedora systemd[2669]: plasma-powerdevil.service: Failed with
result 'exit-code'.
Feb 12 18:05:25 fedora systemd[2669]: Failed to start plasma-powerdevil.service
- Powerdevil.
``

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