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gpetruff

Member

Registered: 2016-02-06

Posts: 31

[SOLVED] Can't change brightness on Lenovo notebook

Hey guys!

I just bought a Lenovo Ideapad Z400 Touch, everything is working really well except the screen brightness.

When the system starts the illumination goes down and I can't turn it u using the hotkeys, but when I am at the notebook BIOS everything works normally.

I was searching on the Lenovo KB and I found the following article:

https://support.lenovo.com/br/pt/documents/ht080665

I have everything installed except the Lenovo Power Manager.

My question is: How can I change my screen brightness ?

I have already tried the commands:

$xrandr --output LVDS1 --brightness 1.3

 

$xbacklight -set 100

I also tried the following tutorial but with no real success:

http://itsfoss.com/fix-brightness-ubuntu-1310/

Thank you !

Last edited by gpetruff (2016-04-09 19:59:28)

Head_on_a_Stick

Member

From: The Wirral

Registered: 2014-02-20

Posts: 8,842

Website

Re: [SOLVED] Can't change brightness on Lenovo notebook

Have you seen https://wiki.archlinux.org/index.php/Backlight?

Particularly https://wiki.archlinux.org/index.php/Ba … ne_options

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Jin, Jîyan, Azadî

gpetruff

Member

Registered: 2016-02-06

Posts: 31

Re: [SOLVED] Can't change brightness on Lenovo notebook

It's solved !

By adding the parameter acpi_backlight=vendor to the bootloader now I am able to configure the brightness.

I will be marking this topic as solved.

Thank you for the help !