I also had a black screen after stable-update-2020-11-18
but I could solve it by downgrading to sddm 0.18.1-3:
pacman -U /var/cache/pacman/pkg/sddm-0.18.1-3-x86_64.pkg.tar.zst
Don’t know if it will work for you, but it might be worth a try.
I also had a black screen after stable-update-2020-11-18
but I could solve it by downgrading to sddm 0.18.1-3:
pacman -U /var/cache/pacman/pkg/sddm-0.18.1-3-x86_64.pkg.tar.zst
Don’t know if it will work for you, but it might be worth a try.