Changing display brightness does not work on Fedora 43

[computersavvy (Jeff V)]

This solution posted just yesterday may assist. The machine is similar.

[SOLVED] Brightness Control Not Working - Lenovo Legion 5 15ARH05 (Ryzen 4800H + GTX 1650)

Problem Description Laptop: Lenovo Legion 5 15ARH05 (AMD Ryzen 7 4800H + NVIDIA GTX 1650) OS: Fedora 43 Workstation (GNOME 49, Wayland) Kernel: 6.18.5 (also affects earlier versions) Symptoms: Screen brightness stuck at maximum No brightness slider in GNOME Settings → Displays Fn+F5/F6 brightness keys do nothing /sys/class/backlight/ directory is empty or contains non-functional acpi_video0 Root Cause This laptop has four separate issues that must ALL be fixed: BIOS graphics mode - Must…