Failed to start com.system76.PowerDaemon.service - System76 Power Daemon

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1

I am having a issue with system 76 deamon, it does not start

com.system76.PowerDaemon.service - System76 Power Daemon
Loaded: loaded (/usr/lib/systemd/system/com.system76.PowerDaemon.service; enabled; preset: disabled)
Drop-In: /usr/lib/systemd/system/service.d
└─10-timeout-abort.conf
Active: failed (Result: exit-code) since Thu 2025-12-04 09:20:12 CST; 9h ago
Invocation: 89660b35dc3a448184bada418e6959bc
Process: 2179 ExecStart=/usr/bin/system76-power daemon (code=exited, status=1/FAILURE)
Main PID: 2179 (code=exited, status=1/FAILURE)
Mem peak: 1.2M
CPU: 6ms

Dec 04 09:20:12 fedora systemd[1]: com.system76.PowerDaemon.service: Scheduled restart job, restart counter is at 5.
Dec 04 09:20:12 fedora systemd[1]: com.system76.PowerDaemon.service: Start request repeated too quickly.
Dec 04 09:20:12 fedora systemd[1]: com.system76.PowerDaemon.service: Failed with result ‘exit-code’.
Dec 04 09:20:12 fedora systemd[1]: Failed to start com.system76.PowerDaemon.service - System76 Power Daemon.

2

Can you run journalctl -u com.system76.PowerDaemon.service -b and show that?

I would also check dnf list installed | grep system76

if it returns that it’s not installed, you can run dnf install system76-power if it is then I’d check if you’re conflicting with any other power manager as I assume this is a laptop. I’d run

system76-power status
systemctl status upower
systemctl status power-profiles-daemon
3

journalctl -u com.system76.PowerDaemon.service -b
Dec 04 09:20:11 fedora systemd[1]: Starting com.system76.PowerDaemon.service - System76 Power Daemon…
Dec 04 09:20:11 fedora system76-power[2128]: [INFO] Rescanning PCI bus
Dec 04 09:20:11 fedora system76-power[2128]: [INFO] 0000:02:00.0: NVIDIA graphics
Dec 04 09:20:11 fedora system76-power[2128]: [INFO] 0000:02:00.0: Function for 0000:02:00.0
Dec 04 09:20:11 fedora system76-power[2128]: [INFO] 0000:02:00.1: Function for 0000:02:00.0
Dec 04 09:20:11 fedora system76-power[2128]: [INFO] 0000:00:02.0: Intel graphics
Dec 04 09:20:11 fedora system76-power[2128]: [INFO] 0000:00:02.0: Function for 0000:00:02.0
Dec 04 09:20:11 fedora system76-power[2128]: [INFO] Enabling graphics power
Dec 04 09:20:11 fedora system76-power[2128]: unable to create system service for org.freedesktop.UPower.PowerProfiles
Dec 04 09:20:11 fedora system76-power[2128]: Caused by:
Dec 04 09:20:11 fedora system76-power[2128]: name already taken on the bus
Dec 04 09:20:11 fedora systemd[1]: com.system76.PowerDaemon.service: Main process exited, code=exited, status=1/FAILU>
Dec 04 09:20:11 fedora systemd[1]: com.system76.PowerDaemon.service: Failed with result ‘exit-code’.
Dec 04 09:20:11 fedora systemd[1]: Failed to start com.system76.PowerDaemon.service - System76 Power Daemon.
Dec 04 09:20:11 fedora systemd[1]: com.system76.PowerDaemon.service: Scheduled restart job, restart counter is at 1.
Dec 04 09:20:11 fedora systemd[1]: Starting com.system76.PowerDaemon.service - System76 Power Daemon…
Dec 04 09:20:11 fedora system76-power[2166]: [INFO] Rescanning PCI bus
Dec 04 09:20:11 fedora system76-power[2166]: [INFO] 0000:02:00.0: NVIDIA graphics
Dec 04 09:20:11 fedora system76-power[2166]: [INFO] 0000:02:00.0: Function for 0000:02:00.0
Dec 04 09:20:11 fedora system76-power[2166]: [INFO] 0000:02:00.1: Function for 0000:02:00.0
Dec 04 09:20:11 fedora system76-power[2166]: [INFO] 0000:00:02.0: Intel graphics
Dec 04 09:20:11 fedora system76-power[2166]: [INFO] 0000:00:02.0: Function for 0000:00:02.0
Dec 04 09:20:11 fedora system76-power[2166]: [INFO] Enabling graphics power
Dec 04 09:20:11 fedora system76-power[2166]: unable to create system service for org.freedesktop.UPower.PowerProfiles
Dec 04 09:20:11 fedora system76-power[2166]: Caused by:
Dec 04 09:20:11 fedora system76-power[2166]: name already taken on the bus
Dec 04 09:20:11 fedora systemd[1]: com.system76.PowerDaemon.service: Main process exited, code=exited, status=1/FAILU>
Dec 04 09:20:11 fedora systemd[1]: com.system76.PowerDaemon.service: Failed with result ‘exit-code’.
Dec 04 09:20:11 fedora systemd[1]: Failed to start com.system76.PowerDaemon.service - System76 Power Daemon.
Dec 04 09:20:12 fedora systemd[1]: com.system76.PowerDaemon.service: Scheduled restart job, restart counter is at 2.
Dec 04 09:20:12 fedora systemd[1]: Starting com.system76.PowerDaemon.service - System76 Power Daemon…
Dec 04 09:20:12 fedora system76-power[2172]: [INFO] Rescanning PCI bus
Dec 04 09:20:12 fedora system76-power[2172]: [INFO] 0000:02:00.0: NVIDIA graphics
Dec 04 09:20:12 fedora system76-power[2172]: [INFO] 0000:02:00.0: Function for 0000:02:00.0
Dec 04 09:20:12 fedora system76-power[2172]: [INFO] 0000:02:00.1: Function for 0000:02:00.0
Dec 04 09:20:12 fedora system76-power[2172]: [INFO] 0000:00:02.0: Intel graphics
Dec 04 09:20:12 fedora system76-power[2172]: [INFO] 0000:00:02.0: Function for 0000:00:02.0
Dec 04 09:20:12 fedora system76-power[2172]: [INFO] Enabling graphics power
Dec 04 09:20:12 fedora system76-power[2172]: unable to create system service for org.freedesktop.UPower.PowerProfiles
Dec 04 09:20:12 fedora system76-power[2172]: Caused by:
Dec 04 09:20:12 fedora system76-power[2172]: name already taken on the bus
Dec 04 09:20:12 fedora systemd[1]: com.system76.PowerDaemon.service: Main process exited, code=exited, status=1/FAILU>
Dec 04 09:20:12 fedora systemd[1]: com.system76.PowerDaemon.service: Failed with result ‘exit-code’.
Dec 04 09:20:12 fedora systemd[1]: Failed to start com.system76.PowerDaemon.service - System76 Power Daemon.
Dec 04 09:20:12 fedora systemd[1]: com.system76.PowerDaemon.service: Scheduled restart job, restart counter is at 3.
Dec 04 09:20:12 fedora systemd[1]: Starting com.system76.PowerDaemon.service - System76 Power Daemon…
Dec 04 09:20:12 fedora system76-power[2176]: [INFO] Rescanning PCI bus
Dec 04 09:20:12 fedora system76-power[2176]: [INFO] 0000:02:00.0: NVIDIA graphics
Dec 04 09:20:12 fedora system76-power[2176]: [INFO] 0000:02:00.0: Function for 0000:02:00.0
Dec 04 09:20:12 fedora system76-power[2176]: [INFO] 0000:02:00.1: Function for 0000:02:00.0
Dec 04 09:20:12 fedora system76-power[2176]: [INFO] 0000:00:02.0: Intel graphics
Dec 04 09:20:12 fedora system76-power[2176]: [INFO] 0000:00:02.0: Function for 0000:00:02.0
Dec 04 09:20:12 fedora system76-power[2176]: [INFO] Enabling graphics power
Dec 04 09:20:12 fedora system76-power[2176]: unable to create system service for org.freedesktop.UPower.PowerProfiles
Dec 04 09:20:12 fedora system76-power[2176]: Caused by:
Dec 04 09:20:12 fedora system76-power[2176]: name already taken on the bus
Dec 04 09:20:12 fedora systemd[1]: com.system76.PowerDaemon.service: Main process exited, code=exited, status=1/FAILU>
Dec 04 09:20:12 fedora systemd[1]: com.system76.PowerDaemon.service: Failed with result ‘exit-code’.
Dec 04 09:20:12 fedora systemd[1]: Failed to start com.system76.PowerDaemon.service - System76 Power Daemon.
Dec 04 09:20:12 fedora systemd[1]: com.system76.PowerDaemon.service: Scheduled restart job, restart counter is at 4.
Dec 04 09:20:12 fedora systemd[1]: Starting com.system76.PowerDaemon.service - System76 Power Daemon…
Dec 04 09:20:12 fedora system76-power[2179]: [INFO] Rescanning PCI bus
Dec 04 09:20:12 fedora system76-power[2179]: [INFO] 0000:02:00.0: NVIDIA graphics
Dec 04 09:20:12 fedora system76-power[2179]: [INFO] 0000:02:00.0: Function for 0000:02:00.0
Dec 04 09:20:12 fedora system76-power[2179]: [INFO] 0000:02:00.1: Function for 0000:02:00.0
Dec 04 09:20:12 fedora system76-power[2179]: [INFO] 0000:00:02.0: Intel graphics
Dec 04 09:20:12 fedora system76-power[2179]: [INFO] 0000:00:02.0: Function for 0000:00:02.0
Dec 04 09:20:12 fedora system76-power[2179]: [INFO] Enabling graphics power
Dec 04 09:20:12 fedora system76-power[2179]: unable to create system service for org.freedesktop.UPower.PowerProfiles
Dec 04 09:20:12 fedora system76-power[2179]: Caused by:
Dec 04 09:20:12 fedora system76-power[2179]: name already taken on the bus
Dec 04 09:20:12 fedora systemd[1]: com.system76.PowerDaemon.service: Main process exited, code=exited, status=1/FAILU>
Dec 04 09:20:12 fedora systemd[1]: com.system76.PowerDaemon.service: Failed with result ‘exit-code’.
Dec 04 09:20:12 fedora systemd[1]: Failed to start com.system76.PowerDaemon.service - System76 Power Daemon.
Dec 04 09:20:12 fedora systemd[1]: com.system76.PowerDaemon.service: Scheduled restart job, restart counter is at 5.
Dec 04 09:20:12 fedora systemd[1]: com.system76.PowerDaemon.service: Start request repeated too quickly.
Dec 04 09:20:12 fedora systemd[1]: com.system76.PowerDaemon.service: Failed with result ‘exit-code’.
Dec 04 09:20:12 fedora systemd[1]: Failed to start com.system76.PowerDaemon.service - System76 Power Daemon.
lines 52-78/78 (END)

4

There is your issue: System76 Power Daemon is trying to register the D-Bus service name org.freedesktop.UPower.PowerProfiles. So you have 2 options you can do. one is to Identify which one is using the bus name so run

systemctl status upower
systemctl status power-profiles-daemon

then just stop the service and disable the one that is conflicting with the other by doing

systemctl stop upower
systemctl disable upower

or

systemctl stop power-profiles-daemon
systemctl disable power-profiles-daemon

The other option is more drastic, but let me know if you want that one. I just recommend this one, as you can always reenable it if needs be.

edit,

also since fedora is a non system76 you should just be able to disable it by doing

systemctl disable com.system76.PowerDaemon.service
5

system76-power does not seem to be installed, but when I try to install i get this message: The requested operation requires superuser privileges. Please log in as a user with elevated rights, or use the “–assumeno” or “–downloadonly” options to run the command without modifying the system state

6

its not needed if you are running Fedora, as fedora has its own power management, so i would just disable it, like my edit says in the last post, and that should take care of the issue.

7

power deamon for system76 is was already disabled, I belive it needs to be enabled to control the backlight of my keyboard. And I can’t enable it, I get a error:

sudo systemctl enable --now com.system76.PowerDaemon.service
Job for com.system76.PowerDaemon.service failed because the control process exited with error code.
See “systemctl status com.system76.PowerDaemon.service” and “journalctl -xeu com.system76.PowerDaemon.service” for details.

sudo systemctl status com.system76.PowerDaemon.service
[sudo] password for rdp:
× com.system76.PowerDaemon.service - System76 Power Daemon
Loaded: loaded (/usr/lib/systemd/system/com.system76.PowerDaemon.service; enabled; preset: disabled)
Drop-In: /usr/lib/systemd/system/service.d
└─10-timeout-abort.conf
Active: failed (Result: exit-code) since Thu 2025-12-04 20:14:49 CST; 3min 19s ago
Invocation: f8b963ab817d49d785e5fc1f7291d20d
Process: 117304 ExecStart=/usr/bin/system76-power daemon (code=exited, status=1/FAILURE)
Main PID: 117304 (code=exited, status=1/FAILURE)
Mem peak: 1.1M
CPU: 7ms

Dec 04 20:14:49 fedora systemd[1]: com.system76.PowerDaemon.service: Scheduled restart job, restart counter is at 5.
Dec 04 20:14:49 fedora systemd[1]: com.system76.PowerDaemon.service: Start request repeated too quickly.
Dec 04 20:14:49 fedora systemd[1]: com.system76.PowerDaemon.service: Failed with result ‘exit-code’.
Dec 04 20:14:49 fedora systemd[1]: Failed to start com.system76.PowerDaemon.service - System76 Power Daemon.

8

First i would check if your keyboard is able to be controlled; without it i would run

ls /sys/class/leds/

then if it does exist, it should show your keyboard in there and i would run

# run this and see if this is the file structure
cat /sys/class/leds/"WhateverValueITShows"/brightness
# then change it with it will make it 50% or you could change it to echo 100 for 100% brightness
echo 50 | sudo tee /sys/class/leds/"WhateverValueITShows"/brightness

So if that all works up above i would just remove system76-power by:

sudo dnf remove system76-power

# check if it is gone 

systemctl status com.system76.PowerDaemon.service

# if you need a more advanced way of changing your brightness on your keyboard i would download 

dnf install libinput

If you are new to linux as i think you are based off the response from above, you need to induce a admin to download system76. Use sudo to run as admin; just be careful, as this allows you to do anything and anything installed with this is system-wide and has all root privileges.

9

This is the output Iget when I run the command,

ls /sys/class/leds/
igc-08400-led0 igc-0d700-led0 input18::capslock input4::capslock mmc0::
igc-08400-led1 igc-0d700-led1 input18::numlock input4::numlock phy0-led
igc-08400-led2 igc-0d700-led2 input18::scrolllock input4::scrolllock system76::kbd_backlight

10

and it will probably be a 0 for off to 3 being high cat /sys/class/leds/system76::kbd_backlight/brightness

11

just tried not not fix the issue.

Everytime there is a kernel update all system76-dkms packages must be reinstalled. As advided by system76 support I would run these commands and It would fix the issue:

This command removes and then immediately installs the packages

This ensures the DKMS hooks run correctly.

sudo dnf reinstall system76-dkms system76-io-dkms system76-power system76-driver

Enable and start the power daemon service

sudo systemctl enable --now com.system76.PowerDaemon.service

Check the status (should show ‘active (running)’)

sudo systemctl status com.system76.PowerDaemon.service

sudo reboot

But on last kernel update did not work and I get this error:

sudo systemctl status com.system76.PowerDaemon.service
[sudo] password for rdp:
× com.system76.PowerDaemon.service - System76 Power Daemon
Loaded: loaded (/usr/lib/systemd/system/com.system76.PowerDaemon.service; enabled; preset: disabled)
Drop-In: /usr/lib/systemd/system/service.d
└─10-timeout-abort.conf
Active: failed (Result: exit-code) since Fri 2025-12-05 08:56:21 CST; 1min 19s ago
Invocation: fb010f2a36de4c1180e2251f9b5e05f2
Process: 2366 ExecStart=/usr/bin/system76-power daemon (code=exited, status=1/FAILURE)
Main PID: 2366 (code=exited, status=1/FAILURE)
Mem peak: 1.1M
CPU: 7ms

Dec 05 08:56:21 fedora systemd[1]: com.system76.PowerDaemon.service: Scheduled restart job, restart counter is at 5.
Dec 05 08:56:21 fedora systemd[1]: com.system76.PowerDaemon.service: Start request repeated too quickly.
Dec 05 08:56:21 fedora systemd[1]: com.system76.PowerDaemon.service: Failed with result ‘exit-code’.
Dec 05 08:56:21 fedora systemd[1]: Failed to start com.system76.PowerDaemon.service - System76 Power Daemon.

After i found that Szydell the fedora system76 repository mantainer suggestes these instaed and says that if you reinstall it would break the system:

DKMS Packages after Fedora Upgrade

After a Fedora version upgrade, all system76-dkms packages must be reinstalled:

sudo dnf remove system76*dkms
sudo dnf install system76-dkms system76-io-dkms system76-acpi-dkms

Important: Do not use dnf reinstall as it will break the installation.

12

output is 255