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Re: Screenblank powerdown LCD display?




On Wed, 8 Sep 1999, Benjamin Herrenschmidt wrote:

> On Tue, Sep 7, 1999, John Whitley <whitley@cse.Buffalo.EDU> wrote:
> 
> >Hmm.. no go.  I'm using frame buffer acceleration in combination with
> >the ATI Rage LT Pro in my PB G3/400, and XF68_FBDev on top of that.
> >
> >Relevant output of 'xset q':
> >
> >Screen Saver:
> >  prefer blanking:  yes    allow exposures: yes
> >[.. deletia ...]
> >DPMS (Energy Star):
> >  Display is not capable of DPMS
> >
> >I have tried using the "setvesablank" program, with no effect.
> >All the screen does is black out, but not power down.
>

 At the moment XF68_FBDev doesn't support DPMS, it should be easy to add
support for it though. I am not sure if Xpmac supports it either.

  Kostas Gewrgiou
 
> You should check what's going on in your kernel. I beleive you are not
> using "no video driver" in BootX ? (You should not be using that). 
> Normally, in drivers/video/atyfb, there should be some code for handling
> backlight in the screen blanking function.
> Is your kernel compiled with the option for PowerBook support ?
> 
> -- 
>            Perso. e-mail: <mailto:bh40@calva.net>
>            Work   e-mail: <mailto:benh@mipsys.com>
> BenH.      Web   : <http://calvaweb.calvacom.fr/bh40/>
> 


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