LCD backlight brightness resets to maximum after suspend

When my Laptop resumes from suspend the LCD backlight brightness resets to maximum. I was wondering if the embedded controller is involved here and Purism could do something there. Apparently this should be done in driver/firmware—not systemd, which is where I asked first (https://github.com/systemd/systemd/issues/21323).

EDIT: This is the Librem 14.

Fixed it by passing acpi_backlight=none to the kernel.