Arch Linux

IlVerZ

Member

Registered: 2011-12-23

Posts: 28

Luminosity set up on a hp dv6

i need a deeper explanation about how correct the Luminosity of my screen. I have installed the xf86-video-ati for my ATI HD4200 & the HD5470 dedicated one The things don't run up correctly, the luminosity is full on 'causing me the complete burning of my eyes...

IlVerZ

Member

Registered: 2011-12-23

Posts: 28

Re: Luminosity set up on a hp dv6

I have installed TLP (https://wiki.archlinux.org/index.php/TLP) and now the luminosity is a bit less... so it's better.. but i can't set it yet... anyone can help me please? ?

IlVerZ

Member

Registered: 2011-12-23

Posts: 28

Re: Luminosity set up on a hp dv6

up! Please...
Someone can help me?

benob

Member

Registered: 2008-11-11

Posts: 187

Re: Luminosity set up on a hp dv6

Have you had a look at /sys/class/backlight/?

You might set the luminosity with this command:

echo <number> | sudo tee /sys/class/backlight/<video-card>/brightness

where <number> is between zero and the content of max_brightness and <video-card> is one of the subdirectories of /sys/class/backlight.

IlVerZ

Member

Registered: 2011-12-23

Posts: 28

Re: Luminosity set up on a hp dv6

I have tried just now but it don't work...
i have two subdirectories ( because my pc has 2 video card, i havent' set switcheroo yet):

/sys/class/backlight/acpi_video0/brightness
/sys/class/backlight/acpi_video1/brightness

I tryed also after your command to reboot.. but nothing changes..

IlVerZ

Member

Registered: 2011-12-23

Posts: 28

Re: Luminosity set up on a hp dv6

Up! an idea? please...

IlVerZ

Member

Registered: 2011-12-23

Posts: 28

Re: Luminosity set up on a hp dv6

Ok, I fix the problem after power off my discrete video card with vga_switcheroo..