[Bug 1706939] Re: A live session can't be shut down due to "[ *** ] (2 of 2) A start job is running for ... (21s / no limit)"

[AB]

this is an annoying issue, i had the same on a fresh installation of
arfull on my dell inspiron 5570.

i think we have two separate issues:

A) [ *** ] (2 of 2) A start job is running for Wait for Network to be
Configured (21s / no limit)

systemd-networkd-wait-online.service fails to start and it adds +2min
delay at startup when your wired Ethernet is not connected.

looking at that https://github.com/systemd/systemd/issues/2154

I start the service by adding --ignore=enp2s0 in /lib/systemd/system
/systemd-networkd-wait-online.service

[Service]
Type=oneshot
ExecStart=/lib/systemd/systemd-networkd-wait-online --ignore=enp2s0
RemainAfterExit=yes


Now i have:

time sudo /lib/systemd/systemd-networkd-wait-online --ignore=enp2s0
ignoring: enp2s0
ignoring: lo

real    0m0.023s
user    0m0.006s
sys     0m0.013s


B) a stop job ... or kworker blocked... msg at Shutdown, reboot ..
looking at https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1724317

I've fixed upgrading the kernel to 4.13.10.

** Bug watch added: github.com/systemd/systemd/issues #2154
   https://github.com/systemd/systemd/issues/2154

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https://bugs.launchpad.net/bugs/1706939

Title:
  A live session can't be shut down due to "[ ***  ] (2 of 2) A start
  job is running for ... (21s / no limit)"

Status in Release Notes for Ubuntu:
  Fix Released
Status in gdm3 package in Ubuntu:
  Confirmed
Status in systemd package in Ubuntu:
  Confirmed

Bug description:
  Test case:
  Boot to live session using current or recent image
  Attempt to restart, shutdown or even log out.
  Hangs basically forever with:

  [ ***  ] (2 of 2) A start job is running for Hold until boot process
  finishes up (21s / no limit)

  or

  [ *** ] (2 of 2) A start job is running for Wait for Network to be
  Configured (21s / no limit)

  ---
  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: gdm3 3.24.2-1ubuntu9
  ProcVersionSignature: Ubuntu 4.11.0-10.15-generic 4.11.8
  Uname: Linux 4.11.0-10-generic x86_64
  ApportVersion: 2.20.6-0ubuntu4
  Architecture: amd64
  CasperVersion: 1.384
  CurrentDesktop: GNOME
  Date: Thu Jul 27 10:15:57 2017
  LiveMediaBuild: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170723)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: gdm3
  UpgradeStatus: No upgrade log present (probably fresh install)
  mtime.conffile..etc.gdm3.custom.conf: 2017-07-27T10:13:04.127685

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