Display Power Management Signaling

Disable DPMS and prevent screen from blanking
Useful when watching movies or slideshows:

emacs ~/.bashrc &
alias scron='xset -dpms; xset s off'

To see your current settings

xset q

...

Screen Saver:

    prefer blanking: yes allow exposures: yes

    timeout: 600 cycle: 600

DPMS (Energy Star):

    Standby: 600 Suspend: 600 Off: 600

    DPMS is Enabled

    Monitor is On