Brightness control not working with HP OMEN 15, Nvidia RTX2070 super max-Q

General system Newbie
21

Does it also work on integrated with optimus?

22

Yes, now it’s working on the three modes (integrated, nvidia, hybrid) as expected, able to control brightness and also a resolution issue I faced seem to been fixed by this.

The culprit was with using discrete graphics in uefi settings.

1 Like
23

/usr/share/X11/xorg.conf.d
these are droplet configs and you simply can add the 10-nvidia.conf there and put in the conifgs you want to change so they do not need a full xorg.conf file only the parts to be changed…

But I am not sure if these options are xorg options? they may need to be added as kernel parameter or module options…

seems both possible…
Xorg:

Section "Device"
        Identifier "NVIDIA Card"
        VendorName "NVIDIA Corporation"
        Driver "nvidia"
        Option "RegistryDwords" "EnableBrightnessControl=1"
EndSection

or as a kernel parameter:
nvidia.NVreg_RegistryDwords=EnableBrightnessControl=1

https://wiki.archlinux.org/title/NVIDIA#Enabling_brightness_control

24

I think the issue was just with me using, discrete graphics in uefi settings for a hybrid graphics card, as I said above. after changing it to discrete and download optimus-manager, everything is working fine in all three modes. I don’t want to break it again changing uefi again to discrete graphics, to try out this xorg approach. :sweat_smile:

25

yea if it works it works no need to break your system :wink:

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