Brightness slider does not work on Fedora 31 Gnome

Ask Fedora
,
1

The brightness slider does not change the brightness on my laptop (Acer Aspire 4810T, Intel integrated graphics). Looking around, the closest thread that I found was this. Adding "acpi_backlight=vendor acpi_osi=linux" to /etc/default/grub (as suggested here) did not work, and neither did creating /etc/X11/xorg.conf.d/10-brightness.conf. Using the xrandr command does work:

xrandr --output LVDS-1 --brightness 1.0

Though this understandably only works when I am using X, not Wayland.

What could possibly be done to fix this?

2

One of the Wayland methods that similar to xrandr’s --brightness flag.
    Arch Wiki’s list of backlight utilities that works with Wayland.

PS:  I’d issues with the Gnome brightness slider only with an external monitor (even if built-in is switched off, though).