How to turn off the backlight?

[Mike Hunter]

On May 23, "To Pierre-Luc Drouin" wrote:

> On May 22, "Pierre-Luc Drouin" wrote:
> 
> > Yes, I have it. But I thought there was a way to turn the backlight off 
> > from the terminal?
> 
> I have had some success with:
> 
> `xset dpms force off`
> 
> But for whatever reason, my dell D800 won't turn the backlight off in X,
> only when running text-only.  You could work around this by switching to
> a different console right before sleep, but again my dell has another
> problem where it won't go *back* to video mode once it's been there; i.e.
> the screen whites out and the box crashes.  Maybe these are all nvidia
> driver issues, which I have to use to address the fact that an external
> monitor won't work with the nv driver....:|

I just remembered I have this backwards:  The backlight *will* turn off in
X with the above command, but not at a plain console.