Comment 83 for bug 1835660

I recall that on one of my machines I had exactly the same situation as reported in #20 and #21 up to the timings (5.3.0-26-generic in Ubuntu 19.10 with EFI Secure Boot and dual boot with Windows 10, fastboot/hibernation disabled, LZ4 image by default, booting failed often, booting succeeded upon reinstall with EFI secure boot). Unfortunately, I don't have this machine any longer. @mario-gleirscher would probably be of help if they provide us with some debugging when asked by the Ubuntu maintainers.

On another machine, I still have this annoying printf in dmesg (and journalctl -b):

[ 0.215092] NET: Registered protocol family 1
[ 0.215096] NET: Registered protocol family 44
[ 0.215105] pci 0000:00:02.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff]
[ 0.215670] PCI: CLS 64 bytes, default 64
[ 0.215696] Trying to unpack rootfs image as initramfs...
[ 0.303126] Initramfs unpacking failed: Decoding failed
[ 0.306614] Freeing initrd memory: 48364K

I run 5.4.0-42-generic in Ubuntu 20.04.1 LTS focal.

As for me, this issue seems to simply uselessly burn processor cycles (and, as every such issue, indirectly generate superfluous carbon dioxide); there is a potential for optimization here.