Hm, I actually get similar results when I revert to 5.8.0-29:
Device 0: QEMU VirtIO Block Device Type: Hard Disk Capacity: 71680.0 MB = 70.0 GB (146800640 x 512) ... is now current device Scanning virtio 0:1... Found /boot/extlinux/extlinux.conf Retrieving file: /boot/extlinux/extlinux.conf 1391 bytes read in 2 ms (678.7 KiB/s) U-Boot menu 1: Ubuntu 20.04.3 LTS 5.11.0-1017-generic 2: Ubuntu 20.04.3 LTS 5.11.0-1017-generic (rescue target) 3: Ubuntu 20.04.3 LTS 5.8.0-29-generic 4: Ubuntu 20.04.3 LTS 5.8.0-29-generic (rescue target) Enter choice: 3: Ubuntu 20.04.3 LTS 5.8.0-29-generic Retrieving file: /boot/initrd.img-5.8.0-29-generic 181049573 bytes read in 461 ms (374.5 MiB/s) Retrieving file: /boot/vmlinuz-5.8.0-29-generic 20059580 bytes read in 80 ms (239.1 MiB/s) append: root=UUID=b797e480-278b-4efc-ae1a-bb1634c8cbcf rw noquiet root=/dev/vda1 Unhandled exception: Load access fault EPC: 00000000fffb642c RA: 00000000fff73bc4 TVAL: 0000000000000000 EPC: 000000008024a42c RA: 0000000080207bc4 reloc adjusted
### ERROR ### Please RESET the board ###
I'll investigate further.
Hm, I actually get similar results when I revert to 5.8.0-29:
Device 0: QEMU VirtIO Block Device
Type: Hard Disk
Capacity: 71680.0 MB = 70.0 GB (146800640 x 512) extlinux. conf extlinux. conf img-5.8. 0-29-generic 5.8.0-29- generic b797e480- 278b-4efc- ae1a-bb1634c8cb cf rw noquiet root=/dev/vda1
... is now current device
Scanning virtio 0:1...
Found /boot/extlinux/
Retrieving file: /boot/extlinux/
1391 bytes read in 2 ms (678.7 KiB/s)
U-Boot menu
1: Ubuntu 20.04.3 LTS 5.11.0-1017-generic
2: Ubuntu 20.04.3 LTS 5.11.0-1017-generic (rescue target)
3: Ubuntu 20.04.3 LTS 5.8.0-29-generic
4: Ubuntu 20.04.3 LTS 5.8.0-29-generic (rescue target)
Enter choice: 3: Ubuntu 20.04.3 LTS 5.8.0-29-generic
Retrieving file: /boot/initrd.
181049573 bytes read in 461 ms (374.5 MiB/s)
Retrieving file: /boot/vmlinuz-
20059580 bytes read in 80 ms (239.1 MiB/s)
append: root=UUID=
Unhandled exception: Load access fault
EPC: 00000000fffb642c RA: 00000000fff73bc4 TVAL: 0000000000000000
EPC: 000000008024a42c RA: 0000000080207bc4 reloc adjusted
### ERROR ### Please RESET the board ###
I'll investigate further.