Turning off screen completely

[Eric Kjeldergaard]

On Thu, 21 Oct 2004 12:54:26 +0200, Jochen Gensch <incmc at gmx.de> wrote:
> 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?

There are 2 major factors that are involved.  One is a driver from X. 
This driver is at the root of (almost) all display issues that people
commonly write about.  The other driver is a kernel driver for
FreeBSD.  This driver is used for many things often including power
management and direct access.  The relationship is not near this
simple, IRL.  It seems that I did see a mailing list submission and
even a kernel patch, IIRC.  Perhaps more googling (I know I'm not
being much help in that part) could root out that message.  I'll send
it to you if I see it again.

-- 
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