Black screen on Plasma Wayland but not X11

[hui]

KDE black screen after logging in with Wayland

X11 seems to work on KDE, but I prefer using Wayland (and it seems that Wayland will be the main compositor soon anyway). However, I get a black screen when I log into the KDE display manager with Wayland instead of X11. Is there a way to fix this? I’ve tried going to previous snapshots in the boot menu, but they only load infinitely. EDIT: I’m running this on a Thinkpad X250, by the way.