I recently booted an old laptop which had guix installed. However when I boot it now -- after the initial login all characters appear as square boxes.

I can launch a terminal window and key in commands (which are echoed back as square blocks). I was wondering if there were some commands I could type in that would fix this problem without requiring a fresh install.

If it matters, I'm running guix on a ThinkPad X220 with Seabiios installed.

UPDATE: I was able to ssh into the laptop and update guix successfully.