Arch Linux

yaiko

Member

Registered: 2023-06-25

Posts: 38

[SOLVED] NVIDIA brightness control

I'm following this guide to make brightness control work (since `xbacklight` doesn't work):
https://wiki.archlinux.org/title/NVIDIA … ss_control

The first option didn't worked so I tried installing `nvidia-bl-dkms` but it seems the package is broken, I get this error when trying to build:

$ cat /var/lib/dkms/nvidia-bl/18.11.0/build/make.log

DKMS make.log for nvidia-bl-18.11.0 for kernel 6.6.10-arch1-1 (x86_64)
Wed Jan 10 20:42:39 -03 2024
make -C /usr/lib/modules/6.6.10-arch1-1/build SUBDIRS=/var/lib/dkms/nvidia-bl/18.11.0/build mod
make[1]: Entering directory '/usr/lib/modules/6.6.10-arch1-1/build'
  SYNC    include/config/auto.conf
crypto/Kconfig:1425: can't open file "arch/arm/crypto/Kconfig"
make[4]: *** [scripts/kconfig/Makefile:77: syncconfig] Error 1
make[3]: *** [Makefile:697: syncconfig] Error 2
make[2]: *** [/usr/lib/modules/6.6.10-arch1-1/build/Makefile:798: include/config/auto.conf] Err
make[1]: *** [Makefile:234: __sub-make] Error 2
make[1]: Leaving directory '/usr/lib/modules/6.6.10-arch1-1/build'
make: *** [Makefile:12: default] Error 2

Since I can't  use this option neither, is there another way to make brightness control work over a Nvidia Optimus system?

Thanks.

Last edited by yaiko (2024-01-11 20:15:55)

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 23,203

Re: [SOLVED] NVIDIA brightness control

Which card is the laptop display attached to? Which "xbacklight" did you try? Actual xbacklight is actually broken, you'll want acpilight and adding your user to the video group. Then you can use xbacklight and that should work.

yaiko

Member

Registered: 2023-06-25

Posts: 38

Re: [SOLVED] NVIDIA brightness control

Which card is the laptop display attached to? Which "xbacklight" did you try? Actual xbacklight is actually broken, you'll want acpilight and adding your user to the video group. Then you can use xbacklight and that should work.

Thanks!, it worked.
If somebody else having this problem too, check:
https://wiki.archlinux.org/title/Backli … t_property
https://wiki.archlinux.org/title/Backlight#ACPI

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 23,203

Re: [SOLVED] NVIDIA brightness control

Great, please mark as [SOLVED] by editing the title in your first post.