Comment 3 for bug 1939988

Okay wait a minute, it IS possible to install Ubuntu by writing the ISO to the bootable key with dd from a machine running Linux. I used dd like so: `sudo dd bs=4M if=/home/noctua/Downloads/ubuntu-21.10-desktop-amd64.iso of=/dev/sdb conv=fdatasync status=progress` and I was amazed that Ubuntu actually booted. It took some time to boot, but I was able to use the installer successfully and I can confirm Ubuntu 21.10 works fine on the Elite Dragonfly G2 (disable PSR using i915.enable_psr=0 in the GRUB config kernel boot parameters after installation to eliminate screen tear and lag). Definitely try doing that. It seems like the HP system firmware has a flaw with being unable to boot certain things. Given that the Fedora USB creator writes the raw ISO to the key, this might be why a Fedora USB key works. I still think this is a flaw that needs to be fixed, but at least there is a workaround.