[Bug 1969283] [NEW] notify-reboot-required hangs in dbus postinst on 20.04->22.04 upgrade

[Liz Fong-Jones]

Public bug reported:

I found that the postinst on dbus hung waiting on /usr/share/update-
notifier/notify-reboot-required to return, when I was in the middle of
do-release-upgrade going to 22.04

** Affects: update-notifier (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1969283

Title:
  notify-reboot-required hangs in dbus postinst on 20.04->22.04 upgrade

Status in update-notifier package in Ubuntu:
  New

Bug description:
  I found that the postinst on dbus hung waiting on /usr/share/update-
  notifier/notify-reboot-required to return, when I was in the middle of
  do-release-upgrade going to 22.04

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