When you want to use legacy BIOS (SeaBIOS) you need to set security.csm=true.
But Incus looks for this BIOS in /usr/share/OVMF while this file is located in /usr/share/seabios/.
Would it be possible to add parameter in Incus that would set location of this firmware?

Current workaround is either moving the file or using symlink as described here: https://discuss.linuxcontainers.org/t/vm-image-converted-from-qcow2-does-not-boot/21248/4

Thanks.