I've been experiencing this for several months now (not exactly sure
when it started). For me, the error leads to a hard stop and the option
to Ctrl-D to continue or ENTER for maintenance.
I followed the process from #47 (Saroumane wrote on 2020-04-06:)
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.
Still got error message.
I restored COMPRESS=lz4 then
sudo update-grub;sudo update-initramfs -c -k all;sudo update-grub
Reboot
Still failed
systemd-analyse says :
Startup finished in 158us (firmware) + 568us (loader) + 2.027s (kernel) + 1min
31.97s (userspace) = 1min 33.999s
graphical.target never reached
I can eventually get back into the system through a combination of
multiple reboots and dumb luck, but this is pretty annoying.
I rebooted a 3rd time : no change, still no more Decoding errors.
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1835660
Title:
initramfs unpacking failed
Status in initramfs-tools package in Ubuntu:
Invalid
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.
---
However, we currently believe that the decoding error reported in
dmesg is actually harmless and has no impact on usability on the
system.
Switching from lz4 to gzip compression, simply papers over the
warning, without any benefits, and slows down boot.
Kernel should be fixed to correctly parse lz4 compressed initrds, or
at least lower the warning, to not be user visible as an error.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1835660/+subscriptions
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