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Re: turning off (LCD+) backlight without suspending



> > On Thu, Jul 19, 2001 at 06:32:50PM -0700, Tony Godshall wrote:
> > > Anyone know if there's a tool to turn off the backlight
.
.
.
> > ... Have you checked whether your BIOS gives you options like 
> > [switching to external monitor]?
> Yeah.  Doesn't :(

> Fn-F1 to Fn-F5 are supposed to do that various things but 
> they just switch Linux consoles (I suspect those features 
> were implemented through W95- in fact the slide in card has 
> that prominently displayed, complete with TM. 
> 
> Thanks for the suggestions tho!

Well, if it was just an OS "feature" then you can probably chvt to an
empty console. 12 maybe.  With no contents to display it may save a 
*little* bit of juice.

If it has dpms features you might be able to convince X to put it in
that mode - however, running X may itself steal juice, can't say if that
would be a win.

For power savings purposes I long since changed my standard mode so that
I have almost no services running, and only two getty's. mingetty actually.  
So the standard runlevel 2 for me is very stripped-bare.  I use runlevel 5 
for "like my normal workstation" mode, in other words, more consoles, apache
running some virtual servers, etc.  You might benefit from the same.

* Heather Stern * star@ many places...



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