With this command, I don’t need a super user privileges like vbetool does. We had to make sure that DPMS is enabled in X. And then using xset command to configure DPMS like: xset dpms force off I replace my old command in xbindkeysrc: bowo@pcxthinkslack:~$ diff /tmp/xbindkeysrc ~/.xbindkeysrc 23c23,24 < "/usr/local/bin/toogle-lcd-state.sh" --- > #"/usr/local/bin/toogle-lcd-state.sh" > "/usr/bin/xset dpms force off" Update /etc/sudoers.d/01_bowo by commenting out this line %users ALL=NOPASSWD:/usr/sbin/vbetool and delete /usr/local/bin/toogle-lcd-state.