It looks like feature is implemented in systemd >= 209 and it stores screen backlight brightness for the whole system (not per user).
The attached patch allows you to restore backlight for each user separately in gnome-settings-daemon 3.8.5 for Ubuntu 13.10.
It looks like feature is implemented in systemd >= 209 and it stores screen backlight brightness for the whole system (not per user). daemon 3.8.5 for Ubuntu 13.10.
The attached patch allows you to restore backlight for each user separately in gnome-settings-