I just found, that gnome-settings-daemon was running on my system and that killing it got me rid of that issue. However I still think xfce4 -power-manager-settings should have told me that there was an issue with the configuration. Also, when starting gnome-settings-daemon on the command line and waiting 10 seconds, the following pops up as soon as the display backlight gets dimmed:
(gnome-settings-daemon:16612): power-plugin-WARNING **: IsInhibited failed: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files I also found the backlight dimming options in gconf-editor in /apps /gnome-power-manager/backlight and deactivated all entries, which didn't help. ** Bug watch added: Debian Bug tracker #650086 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=650086 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/908637 Title: Display brightness turn down on battery mode after 10 seconds (power manager settings ignored) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xfce4-power-manager/+bug/908637/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
