2

I'm running Ubuntu 17.10 with GNOME (Wayland) on a Lenovo X1 Yoga OLED.

I believe this particular Ubuntu installation started out with Ubuntu 16.04 several years ago. I have been running GNOME on the system since it was first installed. - This means that I might have some ancient override left in my system that I have simply forgotten about.

The problem: I get a lot of error messages from gnome-settings-daemon in my journal:

feb 23 13:04:32 kul org.gnome.SettingsDaemon.Power.desktop[1741]: Error executing command as another user: Not authorized
feb 23 13:04:32 kul org.gnome.SettingsDaemon.Power.desktop[1741]: This incident has been reported.
feb 23 13:04:33 kul pkexec[408567]: gdm: Error executing command as another user: Not authorized [USER=root] [TTY=unknown] [CWD=/var/lib/gdm3] [COMMAND=/usr/lib/gnome-settings-daemon/gsd-backlight-helper --set-brightness 843]
feb 23 13:04:33 kul org.gnome.SettingsDaemon.Power.desktop[1741]: Error executing command as another user: Not authorized
feb 23 13:04:33 kul org.gnome.SettingsDaemon.Power.desktop[1741]: This incident has been reported.
feb 23 13:04:33 kul pkexec[408571]: gdm: Error executing command as another user: Not authorized [USER=root] [TTY=unknown] [CWD=/var/lib/gdm3] [COMMAND=/usr/lib/gnome-settings-daemon/gsd-backlight-helper --set-brightness 843]
feb 23 13:04:33 kul org.gnome.SettingsDaemon.Power.desktop[1741]: Error executing command as another user: Not authorized
feb 23 13:04:33 kul org.gnome.SettingsDaemon.Power.desktop[1741]: This incident has been reported.
feb 23 13:04:34 kul pkexec[408575]: gdm: Error executing command as another user: Not authorized [USER=root] [TTY=unknown] [CWD=/var/lib/gdm3] [COMMAND=/usr/lib/gnome-settings-daemon/gsd-backlight-helper --set-brightness 758]
feb 23 13:04:34 kul org.gnome.SettingsDaemon.Power.desktop[1741]: Error executing command as another user: Not authorized
feb 23 13:04:34 kul org.gnome.SettingsDaemon.Power.desktop[1741]: This incident has been reported.
feb 23 13:04:35 kul pkexec[408579]: gdm: Error executing command as another user: Not authorized [USER=root] [TTY=unknown] [CWD=/var/lib/gdm3] [COMMAND=/usr/lib/gnome-settings-daemon/gsd-backlight-helper --set-brightness 783]
feb 23 13:04:35 kul org.gnome.SettingsDaemon.Power.desktop[1741]: Error executing command as another user: Not authorized
feb 23 13:04:35 kul org.gnome.SettingsDaemon.Power.desktop[1741]: This incident has been reported.
feb 23 13:04:35 kul pkexec[408585]: gdm: Error executing command as another user: Not authorized [USER=root] [TTY=unknown] [CWD=/var/lib/gdm3] [COMMAND=/usr/lib/gnome-settings-daemon/gsd-backlight-helper --set-brightness 800]
feb 23 13:04:35 kul org.gnome.SettingsDaemon.Power.desktop[1741]: Error executing command as another user: Not authorized
feb 23 13:04:35 kul org.gnome.SettingsDaemon.Power.desktop[1741]: This incident has been reported.

I have disabled/enabled "Automatic brightness" control in the Settings panel, it does not seem to change anything.

0

Observed similar in Ubuntu 18.04 (xorg based). Using gsettings set org.gnome.settings-daemon.plugins.power ambient-enabled false solved it by switching off automatic brightness.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.