your ubuntu-bug tool is broken, doesn't upload full dmesg. it should use journalctl -kb, not dmesg.
full journal -kb attached, that's probably what you wanted instead of https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1970940/+attachment/5585109/+files/CurrentDmesg.txt
your ubuntu-bug tool is broken, doesn't upload full dmesg.
it should use journalctl -kb, not dmesg.
full journal -kb attached, that's probably what you wanted instead of https:/ /bugs.launchpad .net/ubuntu/ +source/ qemu/+bug/ 1970940/ +attachment/ 5585109/ +files/ CurrentDmesg. txt