SDDM dumps core on boot on a chromebook

I started playing with installing Bazzite today, and I ran into an issue that I haven't found a solution for from others. On boot, before logging in, SDDM crashes with a trace pointing to libopenjph.

I tried adding noapic to cmdline via rpm-ostree kargs but either I did it wrong or this Reddit post is outdated because on reboot, the system dropped into emergency mode, complaining that it cannot find a partition by its uuid. Reverting that override fixed that ofc.

I also tried installing libopenjph-devel as an override to maybe make the trace more useful, but on next boot, we don't even get to the networking stack - the system gets stuck on a blank screen with a non-blinking cursor :/

Some info about my setup, and what I found so far:
I'd be happy to put some elbow grease in to help debug, appreciate the help!
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