VESA VGA Graphic Console and Monitor Power Save Mode

[rruth computer org]

On my Red Hat 7.3 and 7.2 systems XWindows is NOT running.

When NOT using the frame buffer device (normal VGA console), the following 
command will cause the monitor to go into standby/power-save mode after 10 
minutes:

   /usr/bin/setterm -powersave powerdown -powerdown 10

It appears that /usr/bin/setterm -powersave does NOT work when I am using the 
VESA VGA graphics console frame buffer.  (Which I invoke with 'vga=794' at 
boot time.)

How do I enable a monitor power-save mode when using the VESA VGA graphics 
console frame buffer?

Richard
rruth computer org