Arch Linux

archkid420

Member

Registered: 2012-05-13

Posts: 20

[SOLVED] Screen Brightness

This is not really a laptop issue but...
Every time i boot i have to set the brightness down (cuz it hurts my eyes)
So i was wondering, how can i have the brightness at a certain level every time i boot instead of having to set it my self?

I run arch with gnome btw...

Last edited by archkid420 (2012-05-14 13:30:04)

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[Arch64 | awesome]

x33a

Forum Fellow

Registered: 2009-08-15

Posts: 4,587

Re: [SOLVED] Screen Brightness

Your monitor doesn't have a physical button to set the brightness?

FreeTheBee

Member

Registered: 2011-01-02

Posts: 125

Re: [SOLVED] Screen Brightness

You could load xbacklight during startup and have it lower the brightness a bit.

Dustbin

Member

From: The Netherlands

Registered: 2011-12-07

Posts: 124

Re: [SOLVED] Screen Brightness

What video card do you have?

I had a similar problem when I installed Arch and that was that the brightness was turned all the way down to 0 on boot. Very annoying, as I couldn't see anything anymore...

I solved it by adding

echo X > /sys/class/intel_backlight/brightness

to my /etc/rc.local, where X is the value I wanted.

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If the Matrix was real, it would run on Arch...

Yurlungur

Member

From: USA

Registered: 2012-01-06

Posts: 116

Re: [SOLVED] Screen Brightness

Check out the power management page on the wiki. It tells you the command line commands for screen brightness. Then make a .desktop file that gnome will see on startup with the requisite commands. Or can you use .xinitrc? I'm not sure on this one.

EDIT: Oops! Sorry! Dustbin totally said the same thing first. Sorry!

Last edited by Yurlungur (2012-05-14 09:12:51)

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Lenovo Thinkpad T420; Intel sandy bridge i7 2.7GHz; integrated graphics card; 4GB RAM; wifi; Arch; Xmonad WM

archkid420

Member

Registered: 2012-05-13

Posts: 20

Re: [SOLVED] Screen Brightness

I solved it by adding

echo X > /sys/class/intel_backlight/brightness

to my /etc/rc.local, where X is the value I wanted.

Thanks

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[Arch64 | awesome]

gxchen01

Member

From: Hangzhou

Registered: 2012-05-23

Posts: 1

Re: [SOLVED] Screen Brightness

What video card do you have?

I had a similar problem when I installed Arch and that was that the brightness was turned all the way down to 0 on boot. Very annoying, as I couldn't see anything anymore...

I solved it by adding

echo X > /sys/class/intel_backlight/brightness

to my /etc/rc.local, where X is the value I wanted.

It does work!!
But if I want to remember my last setting(the brightness value when I shut down my laptop), just as in windows xp/7, how can I do ??

Last edited by gxchen01 (2012-05-24 16:36:39)

tydell

Member

From: actually: Hannover, DE

Registered: 2009-07-26

Posts: 109

Website

Re: [SOLVED] Screen Brightness

What video card do you have?

I had a similar problem when I installed Arch and that was that the brightness was turned all the way down to 0 on boot. Very annoying, as I couldn't see anything anymore...

I solved it by adding

echo X > /sys/class/intel_backlight/brightness

to my /etc/rc.local, where X is the value I wanted.

It works, but if I do it that way, then I can't change brightness via xbacklight or Fn keys on laptop keyboard

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Mazury welcome

nierro

Member

From: Milan, Italy

Registered: 2011-09-02

Posts: 849

Re: [SOLVED] Screen Brightness

put in /etc/rc.local.shutdown some lines to store your last brightness into a file (/home/yourusername/brightness) , then in /etc/rc.local you have to load that number again.

nierro

Member

From: Milan, Italy

Registered: 2011-09-02

Posts: 849

Re: [SOLVED] Screen Brightness

something like:
rc.local.shutdown:

echo "$(cat /sys/class/backlight/intel_backlight/brightness)" > /home/USER/brightness

rc.local:

echo "$(cat /home/USER/brightness)" > /sys/class/backlight/intel_backlight/brightness

Tell me if it works!

Last edited by nierro (2012-05-24 18:08:30)