A while ago I got a refurbished surface tablet and stuck debian on it and then installed #mobian phosh packages, and everything almost worked except I'd managed to encrypt the swap partition and I couldn't enter the password without a keyboard.

I'd gotten unl0kr (the touchscreen password entry utility) installed but it didn't seem like it was getting run.

I searched around the mobian repository and found the place where the mobian installer tells cryptsetup what script to run to prompt for the password.

I needed to add keyscript=/usr/share/initramfs-tools/scripts/unl0kr-keyscript to entries in /etc/crypttab

Looks like next issue is power management. Currently the screen lights up with a notification saying "suspending soon" every so often.