[Solved] How to adjust brightness of the screen Acer 3820TG?

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[Solved] How to adjust brightness of the screen Acer 3820TG?

Postby phidias81 on Sat Feb 23, 2013 6:25 am

Function key+ arrows is not working (mint 14 mate on acer 3820tg, the brightness bar is actually moving back and forth, but it's not changing the brightness), so I tried to make a search and I tried the following without success:

Installing Xbacklight and
xbacklight -inc 40

changing from power management

sudo setpci -s 00:02.0 F4.b=99

None of them is working for me. What should I do?!?
Last edited by phidias81 on Sun Mar 03, 2013 8:29 am, edited 1 time in total.
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Re: How to adjust brightness of the screen?

Postby robw on Sat Feb 23, 2013 1:02 pm

Not sure about MATE but looking in System Settings (or similar) I seen to recall something about Power Management. Just wondered if an auto dimming box might be ticked which is interfering with your ability to adjust? Sorry its vague, I don't use MATE!
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Re: How to adjust brightness of the screen?

Postby phidias81 on Sun Feb 24, 2013 6:50 am

I tried to deselect "dim when idle" but with no effect
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Re: How to adjust brightness of the screen?

Postby phidias81 on Tue Feb 26, 2013 4:55 am

Any help?
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Re: How to adjust brightness of the screen?

Postby phidias81 on Sun Mar 03, 2013 8:08 am

3 more solutions didn't work.
I tried the brightness widget on the bar, andI tried also these solution without success
http://ubuntuforums.org/showthread.php? ... st11158182

http://forum.notebookreview.com/acer/56 ... ost7260501
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Re: How to adjust brightness of the screen?

Postby phidias81 on Sun Mar 03, 2013 8:29 am

I got it to work! After the last fix it's working but only bith the function keys, not from the terminal! That's good enough!
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