Turning off screen completely

[Jochen Gensch]

Bruce M Simpson wrote:

> I have noticed that DPMS
> standby seems to turn off the backlight on my T40 whilst screensavers
> are running.

Doesn't work here. I can run a xset dpms force standby, suspend... the 
back light always stays on. I'm curious, what is the technical 
background to this? Who / what controls this behaviour? BTW: what is 
that radeon.ko module needed for? I thought X.org uses its own driver?

Jochen