Hello Torrance For the next time, please the “reply to all” functionality in your mail program. On Mon, Dec 11, 2006 at 11:09:07AM +1300, Torrance wrote: > Ben H mentioned he believed the maximum value is set to a safe value, > but a little too dim for the iMac screen. Of course, we are stuck > with the nv driver since we're on ppc. Yes, this code is used right now in drivers/video/nvidia/nv_backlight.c: #define MAX_LEVEL 0x534 Benh had an idea where the max value might be, but I first need root access to NVidia hardware to investigate more. > I've been googling for an hour now and I can find any instructions > about how to provide a new setting for the "backlight curve". Could > you please help me? When the backlight code is enabled, you'll find a bl_curve property in the /sys tree. As far as I know, there's no userland program to fill it yet. Getting the correct curves is a rather complex thing, which I'm not going to explain here, since it involves locating and converting the correct files in Mac OS X. The default is a linear curve, with the highest value being the max. value of the graphics chip. > Also, if the backlight curve is user-configurable, does this mean we > can also turn off the backlight? ie. could we set it up for the > display to go to sleep properly? You can already turn off the backlight with "fblevel 0". Real monitor sleep is a different thing which I don't know about. Greets, Michael -- Gentoo Linux developer, http://hansmi.ch/, http://forkbomb.ch/
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