[Bug 1905594] [NEW] upgrade disables all serial devices and consoles

[Dan Streetman]

Public bug reported:

[impact]

when upgrading, all serial devices are changed to 'dead' and thus all
serial consoles are stopped

[test case]

on a system configured with a serial console, upgrade from focal to the
latest systemd package from upstream, and check the serial console. the
state of the serial port and/or serial console can also be checked with
systemctl status, e.g.:

$ systemctl status dev-ttyS0.device

[regression potential]

and regression would likely involve incorrectly detected or operational
devices after a systemd version upgrade, or after a systemd pid1 reexec
or reload.

[scope]

TBD

** Affects: systemd (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1905594

Title:
  upgrade disables all serial devices and consoles

Status in systemd package in Ubuntu:
  New

Bug description:
  [impact]

  when upgrading, all serial devices are changed to 'dead' and thus all
  serial consoles are stopped

  [test case]

  on a system configured with a serial console, upgrade from focal to
  the latest systemd package from upstream, and check the serial
  console. the state of the serial port and/or serial console can also
  be checked with systemctl status, e.g.:

  $ systemctl status dev-ttyS0.device

  [regression potential]

  and regression would likely involve incorrectly detected or
  operational devices after a systemd version upgrade, or after a
  systemd pid1 reexec or reload.

  [scope]

  TBD

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