13.2 Max screen brightness on reboot

English Hardware
#1

Hello everybody!
I’m having a problem with screen brightness on my Dell laptop (i3-3217U CPU, Intel HD4000 GPU) running openSUSE 13.2 x64, GNOME (but same problem running KDE, too). I can set the level of screen brightness using Fn keys and this works out of the box, but I have to do it after every reboot, because brightness goes up to 100% after reboot. How can I make my screen brightness settings persistent?

#2

What is the exact name for your Dell laptop i.e. Inspiron, XPS?

In the meantime, please install xbacklight for controlling the brightness.

See: https://forums.opensuse.org/showthread.php/482856-Display-brightness-cannot-be-changed-OpenSUSE-12-2-Dell-Inspiron-7520

See: https://forums.opensuse.org/showthread.php/489108-how-to-decrease-screen-brightness?p=2678884&posted=1#post2678884

#3

Follow Up

Add this kernel parameter: acpi_backlight=vendor to the end of the GRUB_CMDLINE_LINUX in the /etc/default/grub file.
Then run as root:

grub2-mkconfig -o /boot/grub2/grub.cfg

Restart your laptop.

#4

Hi Romanator!
Thank you for your help! Your advice solved the problem, no more resetting screen brightness on 100% on reboot.

For the record, I’m running Dell Inspiron 15 (3521). Also, editing /etc/default/grub file as per your instructions was enough, no need to install xbacklight.
Thanks!!

#5

You are welcome. Great to hear that you are up and running.