On Mon 23 Oct 2023 at 20:03:50 (+0200), basti wrote:
> I have a Lenovo E16 Gen1 with Intel Iris and try to adjust brightness
> via Fn-Keys.
> All other Fn-Keys are working.
> 
> basti@thinkpad:~$ xbacklight -set 50
> No outputs have backlight property
> 
> I also try to create a xorg.conf:
> 
> |Section "Device" Identifier "Intel Graphics" Driver "intel" Option
> "Backlight" "intel_backlight" EndSection But after that X is not
> start. [ 20.735] (II) LoadModule: "intel" [ 20.735] (WW) Warning,
> couldn't open module intel [ 20.735] (EE) Failed to load module
> "intel" (module does not exist, 0) [ 20.735] (EE) No drivers
> available. I use LXDE as Desktop. How can I get it working.

Do you have the following file:

  $ cat /sys/class/backlight/intel_backlight/brightness
  40
  $ 

If so, do you get brightness changes when you write values
into it:

  # printf '%s' "60" > /sys/class/backlight/intel_backlight/brightness

Cheers,
David.

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