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#1 2010-03-13 16:10:32

rato67
Member
Registered: 2010-03-13
Posts: 5

[SOLVED] Thinkpad T410's brightness and fn hot keys

Hello,

I recently bought a Lenovo Thinkpad T410 and installed ArchLinux 64 bits on it.
Everything works fine except setting brightness..
I am not enable to change brightness level with the Fn hot keys when I am on X. (changing brightness works during boot)

Is there someone who has the same machine and who could give me some tricks?

Thanks.

Last edited by rato67 (2010-03-16 18:14:12)

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#2 2010-03-13 16:23:10

rato67
Member
Registered: 2010-03-13
Posts: 5

Re: [SOLVED] Thinkpad T410's brightness and fn hot keys

I had at look at http://www.thinkwiki.org/wiki/LCD_Brightness but none of the commands given is working on my laptop. sad

Last edited by rato67 (2010-03-13 17:14:50)

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#3 2010-03-13 19:50:52

lagagnon
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From: an Island in the Pacific...
Registered: 2009-12-10
Posts: 1,077
Website

Re: [SOLVED] Thinkpad T410's brightness and fn hot keys

Use the command "xbacklight". Read "man xbacklight". For example "xbacklight -set 10" reduces backlight to 10%. Then you can bind that command to a function key. For binding methods read: http://wiki.archlinux.org/index.php/Extra_Keyboard_Keys and the documentation for your window manager on how to bind multimedia keys to commands.


Philosophy is looking for a black cat in a dark room. Metaphysics is looking for a black cat in a dark room that isn't there. Religion is looking for a black cat in a dark room that isn't there and shouting "I found it!". Science is looking for a black cat in a dark room with a flashlight.

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#4 2010-03-14 00:24:18

rato67
Member
Registered: 2010-03-13
Posts: 5

Re: [SOLVED] Thinkpad T410's brightness and fn hot keys

This command does not work:
$  xbacklight -set 10
No outputs have backlight property

Also there are no files about brightness in /proc directory on my installation...

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#5 2010-03-15 21:58:11

lagagnon
Member
From: an Island in the Pacific...
Registered: 2009-12-10
Posts: 1,077
Website

Re: [SOLVED] Thinkpad T410's brightness and fn hot keys


Philosophy is looking for a black cat in a dark room. Metaphysics is looking for a black cat in a dark room that isn't there. Religion is looking for a black cat in a dark room that isn't there and shouting "I found it!". Science is looking for a black cat in a dark room with a flashlight.

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#6 2010-03-16 18:15:22

rato67
Member
Registered: 2010-03-13
Posts: 5

Re: [SOLVED] Thinkpad T410's brightness and fn hot keys

I got the solution from there: http://www.thinkwiki.org/wiki/Category:T510

Workarounds:

    * To change the brightness, one can switch to a virtual terminal and change it there, and the new brightness will remain when resuming X usage. The following line can be added to the "Devices" section of xorg.conf to enable brightness control while using the nVidia binary driver: Option "RegistryDwords" "EnableBrightnessControl=1" This results in a high-pitched noise emanating from the display, which does not occur when the brightness is changed via the virtual terminal.

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#7 2010-05-31 07:39:12

Jackey
Member
Registered: 2010-05-28
Posts: 2

Re: [SOLVED] Thinkpad T410's brightness and fn hot keys

Thanks, I got the same problems.

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