[SOLVED] Cannot adjust screen brightness

Removed01 · 2014-06-13 20:53:32

Hi,
I have an Asus 55DR-SX138H laptop, here are the complete hardware specifications: http://goo.gl/s3ie8a
Almost all seems to be working, however I found that the birghtness cannot be changed, I am using Gnome 3 with the open source drivers (xf86-video-ati).

lspci | grep VGA
00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Trinity [Radeon HD 7640G]
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Seymour [Radeon HD 6400M/7400M Series] (rev ff)

Thanks for the support.

Last edited by Removed01 (2014-06-14 01:07:47)

Head_on_a_Stick · 2014-06-13 23:28:55

Have you tried editting the kernel parameters?
Have you tried the other option on that wiki page?
If so, maybe try installing xfce4-power-manager: this is required by my gf's laptop to enable the brightness buttons...

Removed01 · 2014-06-14 01:07:07

Head_on_a_Stick wrote:

Have you tried editting the kernel parameters?
Have you tried the other option on that wiki page?
If so, maybe try installing xfce4-power-manager: this is required by my gf's laptop to enable the brightness buttons...

Thank you very much for the reply. Adding:

acpi='!Windows 2012' acpi_backlight=vendor

as kernel parameters solved, now brightness control is working, also through keys-combination. Thanks again for the help.

Last edited by Removed01 (2014-06-14 01:07:33)

Head_on_a_Stick · 2014-06-14 12:54:57

Good stuff, glad I could help

Arch Linux

#1 2014-06-13 20:53:32

[SOLVED] Cannot adjust screen brightness

#2 2014-06-13 23:28:55

Re: [SOLVED] Cannot adjust screen brightness

#3 2014-06-14 01:07:07

Re: [SOLVED] Cannot adjust screen brightness

#4 2014-06-14 12:54:57

Re: [SOLVED] Cannot adjust screen brightness

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