My Lenovo G780 with Ubuntu 14.04 is fine when the AC charger is plugged in. However, when unplugged, if my mouse does not move for ~12 seconds, the screen dims a bit, but this is not detected by my brightness settings changing. This is very annoying as I can still be sitting at a computer doing something, just not moving the mouse in 12 seconds, so the screen dims. And I end up using the computer and constantly having the screen flicker sometimes and adjusting it.

Currently, I have browsed almost every askubuntu thread about this.

Dconf Editor: org>gnome>settings-daemon>plugins>power : idle dim is unchecked, sleep-inactive-timeout for battery and ac is 1200 seconds each

Caffeine: currently on, no effect

Brightness and Lock: Dim screen to save power is unchecked

Nothing I have done since installing ubuntu has changed anything about this. All I would want is to make the dimming happen after a more reasonable time of 60 seconds or so. Power and Brightness&Lock settings have no further options to affect this. I've also tried some command line advice like turning off dpms (energy saver) and things like that.

I would also add that my laptop does have screen brightness adjusting Fn keys as I've heard this can make a difference.Any help is greatly appreciated!

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.