[Bug 1853982] Re: Resume fails when UUID= syntax used in conf.d/resume

[Benjamin Drung]

** Changed in: initramfs-tools (Ubuntu)
       Status: New => Triaged

** Changed in: initramfs-tools (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1853982

Title:
  Resume fails when UUID= syntax used in conf.d/resume

Status in initramfs-tools package in Ubuntu:
  Triaged

Bug description:
  I've having this issue on Bionic, but it appears that Focal still has
  this issue (and its probably been there for years).  This can easily
  be reproduced by starting with a system on which hibernation is
  working using the resume=UUID=... kernel parameter.  Then create the
  file /etc/initramfs-tools/conf.d/resume with contents RESUME=UUID=...
  Next regenerate the initrd and remove the resume= kernel parameter.
  Now hibernate the machine and when booted back up resume will fail.
  This contradicts expected behavior noted in the documentation.

  This is because there is a bug on this line
  https://git.launchpad.net/ubuntu/+source/initramfs-
  tools/tree/scripts/local-premount/resume?h=ubuntu/focal#n35. The
  variable resume is of the form UUID=..., but of course readlink
  doesn't understand that.  I've fixed this by inserting the line
  'resume=${DEV}' above line 35.

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