Thanks for the suggestions. Since my original post, I’ve tried the following:
- Downgrading my mesa version
- setting
amdgpu.dcdebugmask=0x400
- setting
amdgpu.dcdebugmask=0x410
(as suggested here) sudo grubby --update-kernel=ALL --args="amdgpu.sg_display=0"
- reseating my RAM
I’ve also opened a ticket with FW support as none of these have been successful.