Unable to init server: Could not connect: Connection refused ** (light-locker:21391): WARNING **: Cannot open display:

Usage: light-locker [OPTION?] Help Options: -h, --help Show help options --help-all Show all help options --help-gtk Show GTK+ Options Application Options: --version Version of this application --debug Enable debugging code --lock-after-screensaver=S Lock the screen S seconds after the screensaver started --late-locking Lock the screen on screensaver deactivation --no-late-locking Lock the screen on screensaver activation --lock-on-suspend Lock the screen on suspend/resume --no-lock-on-suspend Do not lock the screen on suspend/resume --lock-on-lid Lock the screen on lid close --no-lock-on-lid Do not lock the screen on lid close --idle-hint Set idle hint during screensaver --no-idle-hint Let something else handle the idle hint --display=DISPLAY X display to use