[Bug 1835660] Re: initramfs unpacking failed

[Simon Repp]

Correction for my last post: More investigation revealed that the issue
IS harmless after all - the error message just happened to be the only
message printed on an otherwise black and unresponsive screen for
multiple seconds before a timeout occurs that after further research
turned out to be caused by something else, not the decoding failure.
Regardless of that the rest of my previous post still applies. (The
"harmless message" exists and does not go away by following the steps
outlined by others, at least for me)

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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.

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