I had also the same message in dmesg. (I don't remember when it started) Here : Ubuntu 19.10 booting a manually installed kernel (5.5.2-050502-generic)
I followed previous advices : Adding COMPRESS=gzip to /etc/initramfs-tools/initramfs.conf (instead of lz4) then : $ sudo update-grub;sudo update-initramfs -c -k all;sudo update-grub Reboot. No more error message, and systemd-analyse says : Startup finished in 15.790s (firmware) + 3.112s (loader) + 9.986s (kernel) + 9.605s (userspace) = 38.495s graphical.target reached after 9.595s in userspace I restored COMPRESS=lz4 then $ sudo update-grub;sudo update-initramfs -c -k all;sudo update-grub Reboot : still no error message, and systemd-analyse says : Startup finished in 15.793s (firmware) + 3.188s (loader) + 8.962s (kernel) + 11.645s (userspace) = 39.589s graphical.target reached after 11.635s in userspace (Yes it's slower but it might be me : I have to choose in grub menu selection and type full disk encryption password) I rebooted a 3rd time : no change, still no more Decoding errors. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to initramfs-tools in Ubuntu. https://bugs.launchpad.net/bugs/1835660 Title: initramfs unpacking failed Status in initramfs-tools package in Ubuntu: Confirmed Status in linux package in Ubuntu: Confirmed Bug description: "initramfs unpacking failed: Decoding failed", message appears on boot up. If I "update-initramfs" using gzip instead of lz, then boot up passes without decoding failed message. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1835660/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp