Home arrow Debugging Tips arrow Activated service 'org.kde.powerdevil.backlighthelper' failed: Launch helper exited with unknown ret
Activated service 'org.kde.powerdevil.backlighthelper' failed: Launch helper exited with unknown ret PDF
Wednesday, 08 February 2012
If you get the following errors/messages in your /var/log/messages:

/var/log/messages
Feb  8 23:14:02 dbus[1512]: [system] Activating service name='org.kde.powerdevil.backlighthelper' (using servicehelper)
Feb  8 23:14:02 dbus[1512]: [system] Activated service 'org.kde.powerdevil.backlighthelper' failed: Launch helper exited with unknown return code 255
Feb  8 23:14:02 dbus[1512]: [system] Activating service name='org.kde.powerdevil.backlighthelper' (using servicehelper)
Feb  8 23:14:02 dbus[1512]: [system] Activated service 'org.kde.powerdevil.backlighthelper' failed: Launch helper exited with unknown return code 255
Feb  8 23:14:02 dbus[1512]: [system] Activating service name='org.kde.powerdevil.backlighthelper' (using servicehelper)
Feb  8 23:14:02 dbus[1512]: [system] Activated service 'org.kde.powerdevil.backlighthelper' failed: Launch helper exited with unknown return code 255
Feb  8 23:16:09 dbus[1512]: [system] Activating service name='org.kde.powerdevil.backlighthelper' (using servicehelper)
Feb  8 23:16:09 dbus[1512]: [system] Activated service 'org.kde.powerdevil.backlighthelper' failed: Launch helper exited with unknown return code 255
Feb  8 23:16:09 dbus[1512]: [system] Activating service name='org.kde.powerdevil.backlighthelper' (using servicehelper)
Feb  8 23:16:09 vi dbus[1512]: [system] Activated service 'org.kde.powerdevil.backlighthelper' failed: Launch helper exited with unknown return code 255

then maybe you want to disable dim display option, especially if you are on a desktop.

To accomplish that go to Settings -> System Settings -> Hardware -> Power Management -> Power Profiles and uncheck Dim Display.

Last Updated ( Wednesday, 08 February 2012 )
 
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