mobian-amd64-p*-20250608 images fail to boot

tested both mobian-amd64-plasma-mobile-20250608.img and mobian-amd64-phosh-20250608.img with the command we have in this repo's readme

$ qemu-system-x86_64 -drive format=raw,file=mobian-amd64-phosh-20250608.img -enable-kvm     -cpu host -vga virtio -m 2048 -smp cores=4     -drive if=pflash,format=raw,readonly=on,file=/usr/share/OVMF/OVMF_CODE_4M.fd

I'm testing on trixie amd64 host, but this doesn't matter IMO as an old image I still had on the disk is booting fine.

Images from last weekend fail with grep: /sys/class/drm/card?/device/of_node/compatible: No such file or directory error message. That's the only thing that can be seen, guest system is then stuck and cannot be recovered.

I've searched the error message on the web and it seems to be a kernel issue, like the kernel not bringing VM's video card up. I am confident amd64 images were working in January, then I'll try downloading some other image in between to check when this broke... and maybe I'll try building an amd64-nonfree image, just in case (Edit: non-free seems enabled in the weekly pipeline)