Failed to connect to Mir: Failed to connect to server socket: No such file or directory Unable to init server: Could not connect: Connection refused ** (gthumb:23874): CRITICAL **: Failed to parse arguments: Cannot open display:

Usage: gthumb [OPTION...] - Image browser and viewer Help Options: -h, --help Show help options --help-all Show all help options --help-gtk Show GTK+ Options --help-clutter Show Clutter Options --help-gst Show GStreamer Options Application Options: -n, --new-window Open a new window -f, --fullscreen Start in fullscreen mode -s, --slideshow Automatically start a slideshow -i, --import-photos Automatically import digital camera photos -v, --version Show version --display=DISPLAY X display to use