black screen when booting bazzite-deck on RX580 (Polaris)

I noticed in my GitHub notifications that a Polaris fix for gamescope landed in bazzite, but when I rebased back to bazzite-deck and rebooted my TV doesn’t show Game Mode Steam.

I heard the Steam boot sound, and if I move the sticks on my controller I can hear it moving around the menus. It’s just black
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