No, we are talking about the errors in xsession-errors.txt:

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

Note that each one of these errors is a separate time out, so the total
delay is 75 seconds. This delay blocks the desktop from starting during
boot and first login.

The delay can be reproduced any time on the live session by attempting
to start blueman-applet from the terminal - it will produce the same
errors and then give up after 75 seconds.

The computer under test has no bluetooth hardware and blueman is not
running. A patch was added to 16.04 because this situation led to
blueman outright crashing there. Now in 18.04 instead of crashing it
delays boot up by 75 seconds instead.

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https://bugs.launchpad.net/bugs/1754836

Title:
  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 bluez package in Ubuntu:
  Confirmed
Status in pulseaudio package in Ubuntu:
  Confirmed

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

  Possibly 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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