[Bug 1619844] Re: [Xenial] shutdown/reboot hangs at "Reached target Shutdown"

[Ilario]

Same problem here. Fresh install of 16.04.1 Ubuntu server. CPU intel
J1900. Kernel 4.4.0-59. I tried what suggested in the link above and any
other method I found around (force ahci in grub options, deactivate usb
3 legacy, using different commands for restarting..) but with no
success. Still hangs at "Reached target Shutdown ". As I plan to install
the PC circa 1500 Km away from where I live, pressing the physical
button could be problematic...

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Title:
  [Xenial] shutdown/reboot hangs at "Reached target Shutdown"

Status in systemd package in Ubuntu:
  Confirmed

Bug description:
  I tried getting more information in the debug-shell but I was
  unsuccessful in doing so. I was able to switch to the debug shell via
  ctrl+alt+f9 but I couldn't actually type anything in. I could switch
  back to the stuck shutdown screen via ctrl+alt+f1, and hitting NumLock
  would turn the light on my keyboard on and off, but I couldn't do
  anything else. I captured a journal of the stuck reboot.
  Interestingly, the journal shows a few more lines after "Reached
  target Shutdown", which is as far as I get on my screen.

  This system was installed with Xenial 16.04.1 (never been upgraded)
  and has had this problem since the very first boot.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: systemd 229-4ubuntu7
  ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16
  Uname: Linux 4.4.0-36-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  Date: Sat Sep  3 00:33:19 2016
  InstallationDate: Installed on 2016-08-17 (16 days ago)
  InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  ProcEnviron:
   SHELL=/bin/bash
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-36-generic.efi.signed root=UUID=5f709fed-48c9-4830-87be-acd13f263eb1 ro
  SourcePackage: systemd
  SystemdDelta:
   [EXTENDED]   /lib/systemd/system/systemd-timesyncd.service → /lib/systemd/system/systemd-timesyncd.service.d/disable-with-time-daemon.conf
   [EXTENDED]   /lib/systemd/system/rc-local.service → /lib/systemd/system/rc-local.service.d/debian.conf
   [EXTENDED]   /lib/systemd/system/mariadb.service → /etc/systemd/system/mariadb.service.d/migrated-from-my.cnf-settings.conf
   
   3 overridden configuration files found.
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 06/03/2016
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: KYSKLi70.86A.0037.2016.0603.1032
  dmi.board.name: NUC6i7KYB
  dmi.board.vendor: Intel Corporation
  dmi.board.version: H90766-404
  dmi.chassis.type: 3
  dmi.chassis.vendor: Intel Corporation
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrKYSKLi70.86A.0037.2016.0603.1032:bd06/03/2016:svn:pn:pvr:rvnIntelCorporation:rnNUC6i7KYB:rvrH90766-404:cvnIntelCorporation:ct3:cvr1.0:

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