Originally Posted by Stephen Warren
Does this still happen without nvidiabl? I can't really find any information on nvidiabl, but I'd suggest contacting the maintainers of that application first, since you're explicitly controlling your backlight with it.
I'm the maintainer of the nvidiabl module. Do you have any kind of information on the meaning of bit 30 and 31 of the brightness register (@c084)? As you can see here: http://www.nvnews.net/vbulletin/show...=1#post2374990
the register is restored by another module (I don't know wich one) with bit 30 set.