Im on KDE Manjaro.
I have an OLED panel on my Dell XPS 15 7590 Laptop.
Here https:// wiki.archlinux. org/index.php/Dell_XPS_15_7590#Backlight I read to install linux-oled from the AUR.
Installing linux-oled I had this problem:
[...] ==> Verifying source file signatures with gpg... archlinux-linux git repo ... FAILED (unknown public key 3B94A80E50A477C7) ==> ERROR: One or more PGP signatures could not be verified! Failed to build linux-oled
Does anyone know a fix?