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jameh0

Member

Registered: 2013-04-06

Posts: 40

Macbook Pro Aluminum gmux backlight support pommed

On my model (Macbook Pro 5,2) and others with simliar graphics setup (two nvidia cards), on kernel 3.10 and some before, backlight support is in the kernel, and the device is at /sys/class/backlight/gmux_backlight.

Pommed v1.40git does not know about this driver. If you want pommed to handle the LCD backlight, it needs to know this path.

This is a matter of a simple 4 liner patch: http://pastebin.com/sCNjtuwD

I can't find where to submit this patch upstream though. Any help?

Also, max_brightness is 16055, so modify your pommed.conf to some reasonable values:

lcd_sysfs {
	# The sysfs backlight control is a generic interface provided
	# by the Linux kernel for backlight control on most graphic cards.
	# The brightness range can differ depending on the hardware.

	# initial backlight level [12] (0 - 15, -1 to disable)
	init = 14000
	# step value (1 - 2)
	step = 1000
	# backlight level when on battery [6] (1 - 15, 0 to disable)
	on_batt = 9000
}

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Life is very short, and there's no time for fussing and fighting, my friends.

HalosGhost

Forum Moderator

From: Twin Cities, MN

Registered: 2012-06-22

Posts: 2,095

Website

Re: Macbook Pro Aluminum gmux backlight support pommed

This seems like something that belongs in the Wiki, not the BBS.

All the best,

-HG

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Code of Conduct

jameh0

Member

Registered: 2013-04-06

Posts: 40

Re: Macbook Pro Aluminum gmux backlight support pommed

I guess I'm looking for help in finding where development happens upstream.

The last commit on master here: git://git.debian.org/git/pommed/pommed.git was in 2011.

I suppose it's not actively developed? Maybe in that case, the package maintainer could include this patch?

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Life is very short, and there's no time for fussing and fighting, my friends.