I ran gnome-control-center from terminal and activated screen-cc-panel (I am running desktop system without battery)
Got this warining:
(gnome-control-center:5897): screen-cc-panel-WARNING **: Error getting brightness: GDBus.Error:org.gtk.GDBus.UnmappedGError.Quark._gsd_5fpower_5fmanager_5ferror.Code0: gsd-backlight-helper failed: No backlights were found on your system
set_brightness_cb (GObject *source_object, GAsyncResult *res, gpointer user_data) is called. Is it necessary to call this method on a system with only ac-power?
I ran gnome-control- center from terminal and activated screen-cc-panel (I am running desktop system without battery)
Got this warining:
(gnome- control- center: 5897): screen- cc-panel- WARNING **: Error getting brightness: GDBus.Error: org.gtk. GDBus.UnmappedG Error.Quark. _gsd_5fpower_ 5fmanager_ 5ferror. Code0: gsd-backlight- helper failed: No backlights were found on your system
From http:// bazaar. launchpad. net/~ubuntu- branches/ ubuntu/ oneiric/ gnome-control- center/ oneiric/ view/head: /panels/ screen/ cc-screen- panel.c, it seems like
set_brightness_cb (GObject *source_object, GAsyncResult *res, gpointer user_data) is called. Is it necessary to call this method on a system with only ac-power?