This is a command-line that is useful for manually exercising the
org.bluez DBus activiation. It might reproduce the timeout or otherwise
give useful clues. Command should be all on one line (ignore Launchpad
line wrapping):

dbus-send --system --print-reply --dest=org.bluez /
org.freedesktop.DBus.ObjectManager.GetManagedObjects

I won't reproduce the entire output here but this is the initial part
when a BT hci device is available:

method return time=1522790434.404190 sender=:1.2 -> destination=:1.399 
serial=821 reply_serial=2
   array [
      dict entry(
         object path "/org/bluez"
         array [
            dict entry(
               string "org.freedesktop.DBus.Introspectable"
               array [
               ]
            )
            dict entry(
               string "org.bluez.AgentManager1"
               array [
               ]
            )
            dict entry(
               string "org.bluez.ProfileManager1"
               array [
               ]
            )
         ]
      )
      dict entry(
         object path "/org/bluez/hci0"

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to bluez in Ubuntu.
https://bugs.launchpad.net/bugs/1754836

Title:
  Xubuntu: ERROR:dbus.proxies:Introspect error on org.bluez:/org/bluez:
  dbus.exceptions.DBusException: org.freedesktop.DBus.Error.TimedOut:
  Failed to activate service 'org.bluez': timed out
  (service_start_timeout=25000ms)

Status in blueman package in Ubuntu:
  New
Status in bluez package in Ubuntu:
  Confirmed
Status in pulseaudio package in Ubuntu:
  Confirmed

Bug description:
  Xubuntu seeing long first time boot to desktop from login.

  Also causing the long time to desktop from try/install livesession
  dialogue.

  Including xsession-errors from the first time boot on installed
  system.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: bluez 5.48-0ubuntu3
  ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3
  Uname: Linux 4.15.0-10-generic x86_64
  ApportVersion: 2.20.8-0ubuntu10
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Sat Mar 10 11:32:59 2018
  InstallationDate: Installed on 2018-03-08 (1 days ago)
  InstallationMedia: Xubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 
(20180306.1)
  InterestingModules: bluetooth
  MachineType: NOVATECH LTD MBB-44608
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-10-generic 
root=UUID=8d9f054a-4c7a-481f-966e-fc2cd6f51aca ro quiet splash
  SourcePackage: bluez
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 06/19/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: F5
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: H81M-DS2V
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.board.version: To be filled by O.E.M.
  dmi.chassis.asset.tag: 7383241-001
  dmi.chassis.type: 3
  dmi.chassis.vendor: NOVATECH LTD
  dmi.chassis.version: V1.0
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrF5:bd06/19/2014:svnNOVATECHLTD:pnMBB-44608:pvrV1.0:rvnGigabyteTechnologyCo.,Ltd.:rnH81M-DS2V:rvrTobefilledbyO.E.M.:cvnNOVATECHLTD:ct3:cvrV1.0:
  dmi.product.family: AMI PLATFORM
  dmi.product.name: MBB-44608
  dmi.product.version: V1.0
  dmi.sys.vendor: NOVATECH LTD
  hciconfig:

  rfkill:

  syslog: Mar 10 11:30:16 test-MBB-44608 NetworkManager[679]: <info>
  [1520681416.8951] Loaded device plugin: NMBluezManager
  (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-
  bluetooth.so)

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