Public bug reported:

I’ve upgraded a server to bionic beaver, and it couldn’t boot anymore.
Using the “recovery boot” option hanged a long time with the message
"waiting for resume device".

Some googling lead be to the bug #206358, and I deduced that do-release-
upgrade “messed with my swap” (as said by @aldebx on there). This was a
LVM set-up with an encrypted swap, which may explain the bug.

My workaround, form the root login of the recovery mode was the following 
1. comment out the RESUME line in /etc/initramfs-tools/conf.d/resume 
2. rebuild the initramfs with update-initramfs -u
3. mount the /boot partiton to actually put the initramfs on the correct place

Now the systems boots again, but this problem shouldn’t have happened in
the first place.

** Affects: initramfs-tools (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bionic

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Touch seeded packages, which is subscribed to initramfs-tools in Ubuntu.
https://bugs.launchpad.net/bugs/1771000

Title:
  do-release-upgrade on a server with encrypted swap does not boot

Status in initramfs-tools package in Ubuntu:
  New

Bug description:
  I’ve upgraded a server to bionic beaver, and it couldn’t boot anymore.
  Using the “recovery boot” option hanged a long time with the message
  "waiting for resume device".

  Some googling lead be to the bug #206358, and I deduced that do-
  release-upgrade “messed with my swap” (as said by @aldebx on there).
  This was a LVM set-up with an encrypted swap, which may explain the
  bug.

  My workaround, form the root login of the recovery mode was the following 
  1. comment out the RESUME line in /etc/initramfs-tools/conf.d/resume 
  2. rebuild the initramfs with update-initramfs -u
  3. mount the /boot partiton to actually put the initramfs on the correct place

  Now the systems boots again, but this problem shouldn’t have happened
  in the first place.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1771000/+subscriptions

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