David,

The first method cannot work for me, because the 
file "/sys/class/backlight/intel_backlight/brightness"
cannot be changed, with this default value "6144".
(I need 9144).

On Saturday 20 July 2019 03:07:00 David C. Rankin wrote:
>   "${USER}-backlight" will be a new file that holds the current brightness
> setting. ${USER} just expands to your username. It was just brace-enclosed
> to make that apparent.
> For what it is worth I use the following script (with a second script that
> is just a wrapper to call the primary script with the -s option for startup)
> The wrapper script (scrnbrightwiznv_startup.sh) is simply:
>  #!/bin/bash
>  /home/david/scr/adm/scrnbrightwiznv.sh -s
>  In my ~/.kde/Autostart (you would have ~/.trinity/Autostart or
> ~/.tde/Autostart), I just use the symlink
> l ~/.kde/Autostart/
> scrnbrightwiznv_startup.sh -> /home/david/scr/adm/scrnbrightwiznv_startup.sh
> The primary script is attached. You will need to change acpi_video0 to
> intel_backlight. Other than that, it should work for you. You can simply use
> the wrapper calling it with the -s option at startup in the Autostart folder
> if tdepowersave handles the changes during the session for you. 
> (however, you will need a way to write the final brightness value to the
> file in /usr/local/ so it is saved for next startup.
> There is no right way or wrong way to do this. Like I posted earlier,
> it can 
> be display driver dependent, kernel dependent, distribution config
> dependent, 
> etc.. Just find a way that works and stick with it :)

The directory Autostart is in :
/home/andre/.trinity/Autostart/

So I put exactly this line in "/home/andre/.trinity/Autostart/" ? :
scrnbrightwiznv_startup.sh -> /home/andre/scr/adm/scrnbrightwiznv_startup.sh

Thanks for your help and Regards,

Andr�