"Setterm" and "xset s off" are neat, but they did not do the trick for me. Instead, I had to edit my /etc/X11/xorg.conf (was XF86Config-4). Section "Monitor" Identifier "alans_monitor" HorizSync 30-64 VertRefresh 50-130 # Option "DPMS" <-- comment this out EndSection Thanks for all of the suggestions! Alan