Why doesn't my laptop screen brightness go down when unplugged after 11.04 to 11.10 upgrade?

Question

As stated above, after the upgrade to 11.10 my laptop no longer dims the screen when I go on battery power. Why?

doug · Answer 1 · 2011-11-08 17:23:29Z

Try this

Go to the below Screen setting while on Ac & uncheck the "Dim screen...' box

Now unplug power from the laptop & move the slider back & forth a bit, then set it to the brightness you wish for when on battery.

Plug power back in, hopefully it should return to full brightness, unplug & again hopefully the screen should dim.

If all that works you can check the 'Dim ..' box or just leave unchecked

The whole system doesn't quite make sense, I'm thinking the check box relates to Ac only

Didn't work. The new ubuntu just completely ignores the fact that it's connected or not. At least on my Asus 1001HA.

RolandiXor · Answer 2 · 2011-11-08 16:30:53Z

up vote 1 down vote

From system settings, go to Screen, and enable the option to dim to save power:

I like pie.

answered Nov 8 '11 at 16:30

RolandiXor♦
34.7k865144

	The setting was on by default, it just doesn't do what it should. It just dims the screen when I'm not doing anything. – sky Nov 8 '11 at 16:32
	Well for me it dims my screen when I unplug the power cord, but only if I'm not doing anything. It's kind complicated - but it works. – RolandiXor♦ Nov 8 '11 at 17:24

2 Answers