On a Mandriva 2008.1 workstation with X11 not running I cannot seem
to get the automatic display shutoff to work. (The DPMS stuff works
fine when X11 is running though.) I think this is supposed
to do it when X11 is not active:

setterm -powersave on
setterm -powerdown 1

but after no keystrokes or mouse movements for over a minute the display
was still lit.

This shuts down immediately

vbetool dpms off

but it requires an explicit

vbetool dpms on

to relight the display, so it's not good for blanking an idle console.

Regards,

David mathog