** Description changed:

+ [impact]
+ 
+ shutdown sometimes fails to unmount some fs, which causes shutdown hang
+ 
+ [test case]
+ 
+ it's unclear what the specific configuration is to be able to reproduce
+ this, but there are some examples in the upstream bug
+ 
+ [regression potential]
+ 
+ as this adjusts shutdown umounting, any regression would likely involve
+ either failure to unmount some filesystems on shutdown and/or failure to
+ shutdown the system.
+ 
+ [scope]
+ 
+ this is needed for b.
+ 
+ this is fixed upstream by PR 8429 which is included starting in v239, so
+ this is fixed already in Focal and later.
+ 
+ this was caused by upstream commit d5641e0d7e8 which was added in v236,
+ so this bug is not present in x.
+ 
+ [original description]
+ 
  I am using Xubuntu 18.04 64 bit and got "shutdown[1]: Failed to wait for
  process: Protocol error" at shutdown or reboot and hangs.
  
  systemd: 237-3ubuntu10.22
  
  It's this issue:
  https://github.com/systemd/systemd/issues/8155

** Changed in: systemd (Ubuntu Bionic)
     Assignee: (unassigned) => Dan Streetman (ddstreet)

** Changed in: systemd (Ubuntu Bionic)
   Importance: Undecided => Medium

** Changed in: systemd (Ubuntu Bionic)
       Status: New => In Progress

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https://bugs.launchpad.net/bugs/1832754

Title:
  "shutdown[1]: Failed to wait for process: Protocol error" at shutdown
  or reboot and hangs.

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