[Bug 1880250] Re: Ctrl-C message displayed without any actual disk check

[Dimitri John Ledkov]

Installed focal Ubuntu desktop .2 media with LUKS full disk encryption.

On boot the fsck messages briefly flicker, and then are cleared, then
there is smooth transition to gdm.

It's a lot better than before, where fsck message would linger forever.

It would be ideal to make it flickerfree. Aka delay displaying fsck
message if it takes more than 1second and/or there is an update.

** Changed in: systemd (Ubuntu Focal)
       Status: Confirmed => Fix Released

** Changed in: systemd (Ubuntu)
       Status: Confirmed => Fix Released

** Changed in: systemd (Ubuntu Groovy)
       Status: Confirmed => Fix Released

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https://bugs.launchpad.net/bugs/1880250

Title:
  Ctrl-C message displayed without any actual disk check

Status in plymouth package in Ubuntu:
  Fix Released
Status in systemd package in Ubuntu:
  Fix Released
Status in plymouth source package in Focal:
  Fix Released
Status in systemd source package in Focal:
  Fix Released
Status in plymouth source package in Groovy:
  Fix Released
Status in systemd source package in Groovy:
  Fix Released

Bug description:
  [Impact]

   * fsck messages is shown by plymouth, despite all fscks already
  completed.

  [Test Case]

   * Install Ubuntu Desktop with full disk encryption

   * Observe that fsck messages (press ctrl+c) is shown, and remains
  there on screen for a little while as plymouth transitions to gdm

   * After installing the update, observe that when fsck completes the
  messages are cleared and the transition to gdm is done without
  fsck/ctrl+c message present.

   * After this change lands in -updates, and daily desktop images are
  built with this, double check that casper-md5sum transition is also
  smooth.

  
  [Regression Potential] 

   * plymouth spinner theme is adjusted to clear the footer, at the end
  of fsck, even if systemd-fsckd didn't do that. At the moment there are
  two consumers of the fsck apis systemd-fsckd & casper-md5sum used on
  installed systems and live-isos respectively. If something else pushes
  messages to the footer, they might get cleared at the end of fsck.

  [Other Info]
   
   * Original bug report

  It seems the transition to bgrt lost something with Ubuntu's disk
  check details. The only thing I see on my screen during a long disk
  check is the "press Ctrl-C to stop all in progress disk checks" with
  no progress.

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