I've installed the edge kernel on my Pi 4 Rev 1.4 2GB board and haven't been able to recreate the issue:
jawn-smith@localhost:~$ snap info pi-kernel | egrep "installed|18-pi/edge" tracking: 18-pi/edge 18-pi/edge: 5.4.0-1043.47~18.04.1 2021-08-25 (343) 193MB - installed: 5.4.0-1043.47~18.04.1 (343) 193MB kernel jawn-smith@localhost:~$ uname -r 5.4.0-1043-raspi jawn-smith@localhost:~$ cat /proc/device-tree/model ; echo Raspberry Pi 4 Model B Rev 1.4 jawn-smith@localhost:~$ free -h total used free shared buff/cache available Mem: 1.8G 146M 1.4G 9.4M 226M 1.6G Swap: 0B 0B 0B -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1940400 Title: Pi 4B 2GB boot failure To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-firmware-raspi2/+bug/1940400/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs