Ubuntu
gnome-control-center package

  1. Bug #999888
  2. Comment #3

Comment 3 for bug 999888

Revision history for this message
rpr nospam (rpr-nospam) wrote : Re: Missing brightness control in setting /Brightness and lock

I can confirm this on a Ubuntu 12.04 64-bit after upgrade from 11.10. When the Brightness and Lock tool is started from command line it produces the following output:

$ gnome-control-center screen

(gnome-control-center:4353): screen-cc-panel-WARNING **: Error getting brightness: GDBus.Error:org.gtk.GDBus.UnmappedGError.Quark._gsd_5fpower_5fmanager_5ferror.Code0: gsd-backlight-helper failed:

Also, the /sys/class/backlight/ directory is empty.

Is there a way to fix this?