Add check for DISPLAY
Add check for DISPLAY

mixu/nwm,ellis/nwm,mixu/nwm,ellis/nwm,dougbo/lever,dougbo/lever,dougbo/lever,dougbo/lever,mixu/nwm,ellis/nwm,mixu/nwm,ellis/nwm,dougbo/lever,mixu/nwm,ellis/nwm