Arch Linux

killvanrea

Member

Registered: 2013-10-04

Posts: 32

[SOLVED] Screen Brightnes not work - Asus ROG GL552VW

Hi all,
recently I've change my laptop, with the new ROG, but I can't control my brightness. I've installed all intel-driver and mesa but still no entry in /sys/class/backlight/.
My X11 conf:

Section "Monitor"
    Identifier             "Monitor0"
EndSection

Section "Device"
    Identifier             "Device0"
    Driver                  "vesa" #Choose the driver used for this monitor
    Option "Backlight"     "intel_backlight"
EndSection

Section "Screen"
    Identifier             "Screen0"  #Collapse Monitor and Device section to Screen section
    Device                 "Device0"
    Monitor                "Monitor0"
    DefaultDepth           24 #Choose the depth (16||24)
    SubSection             "Display"
        Depth              24
        Modes              "1920x1080" #Choose the resolution
    EndSubSection
EndSection

I search alot in the wiki and forum but, I only found that I missed to add "acpi_osi=Linux acpi_backlight=vendor" or something similar. From my previous experience with Arch I remember that I fixed the same problem on my dell using option like that in my grub. The problem now is I used "bootctl install" and don't know where are the kernel option, because the Asus use only UEFI and I have a WIndows 10 also on it.
Can someone tell me a solution for my the problem, even if my Fn+backlight keys not going to worked.I want only to minimize the brightness cause can't continue to use it at full max brightness

p.P: Input from xbacklight -set 50 :

 No outputs have backlight property 

P.p: I try also to switch X11 driver to intel but can't startx, if it matter my Intel video is Skylake Intel HD530

Last edited by killvanrea (2016-02-16 12:35:30)

Head_on_a_Stick

Member

From: The Wirral

Registered: 2014-02-20

Posts: 8,842

Website

Re: [SOLVED] Screen Brightnes not work - Asus ROG GL552VW

I search alot in the wiki and forum but, I only found that I missed to add "acpi_osi=Linux acpi_backlight=vendor" or something similar.

For kernel >4 try one of the four parameters listed in the ArchWiki.
https://wiki.archlinux.org/index.php/Ba … ne_options

---

Jin, Jîyan, Azadî

killvanrea

Member

Registered: 2013-10-04

Posts: 32

Re: [SOLVED] Screen Brightnes not work - Asus ROG GL552VW

Okay I manage to write acpi_backlight in my kernel option. With acpi_backlight=vendor, directory /sys/class/backlight/asus-nb-wmi has folder and files. I've try to edit them using vim(sudo vim /sys/class/backlight/asus-nb-wmi/brightness), but i've got Fsync error, and FnKey+F5/F6 still not working Any suggestions?

p.P: I've changed backlight option from  "intel_backlight" to "asus-nb-wmi", and after reboot my display is dimmer, and no more max backlight. But still cant change the value or to adjust it using FnKey+F5/F6....

Last edited by killvanrea (2015-10-28 22:40:33)

Xwang

Member

From: EU

Registered: 2012-05-14

Posts: 397

Re: [SOLVED] Screen Brightnes not work - Asus ROG GL552VW

Maybe this can help you:
http://askubuntu.com/questions/694453/n … parameters
Xwang

killvanrea

Member

Registered: 2013-10-04

Posts: 32

Re: [SOLVED] Screen Brightnes not work - Asus ROG GL552VW

The problem is resolved with adding

acpi_backlight=vendor

in kernel parameters. But only can change the brightens with "xbacklight" command. The Fn+F5/F6 not working for now

veaceslav

Member

Registered: 2014-10-26

Posts: 6

Re: [SOLVED] Screen Brightnes not work - Asus ROG GL552VW

The problem is resolved with adding

acpi_backlight=vendor

in kernel parameters. But only can change the brightens with "xbacklight" command. The Fn+F5/F6 not working for now

if you use

acpi_backlight=native

The fn keys work, at least I tested with the latest arch with KDE Plasma