Re: Turning off the screen on an iBook G4

[Michael <macallan%netbsd.org@localhost>]

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Hello,

On Jun 21, 2010, at 1:14 AM, R. Tyler Ballance wrote:

> Hello again everybody, I've been running this iBook dual-USB chiclet  
> G4 model
> with NetBSD 5.0.2 quite well over the past few weeks but one thing  
> has been
> really nagging me.
>
> The screen never dims, or turns off.
>
> I've been using this machine largely as a headless NetBSD machine,  
> so I'm
> wondering if there's any way to simply disable the screen via sysctl  
> or
> something else? (X11 is out of the picture, if messes up something  
> fantastic
> with this model)

The radeonfb driver knows how to control the backlight, it's not  
enabled by default since it doesn't work well with certain Radeon  
models but it works fine with my 800MHz iBook G4 ( the graphics chip  
is an RV280 )

This will still not let X turn the screen off but you can use  
wsconsctl to do it and the brightness control buttons should work.

have fun
Michael

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