[Bug 1779476] Re: Boot process hangs indefinitely. Never finishes.

[Charles Burns]

Installing plymouth 0.9.3-3 over the distro 0.9.3-1 had no effect on this system - amd64 - either.
Steps taken with dpkg for a hash-checked .deb were:

Preparing to unpack .../plymouth_0.9.3-3_amd64.deb ...
Unpacking plymouth (0.9.3-3) over (0.9.3-1ubuntu7) ...
Setting up plymouth (0.9.3-3) ...
update-initramfs: deferring update (trigger activated)
update-rc.d: warning: start and stop actions are no longer supported; falling back to defaults
update-rc.d: warning: start and stop actions are no longer supported; falling back to defaults
Processing triggers for systemd (237-3ubuntu10) ...
Processing triggers for ureadahead (0.100.0-20) ...
ureadahead will be reprofiled on next reboot
Processing triggers for man-db (2.8.3-2) ...
Processing triggers for initramfs-tools (0.130ubuntu3.1) ...
update-initramfs: Generating /boot/initrd.img-4.15.0-24-generic

Apt complained about some redundancies, which I deleted.

After uninstalling haveged, the system hung indefinitely once more at various advices of processes waiting, depending on the 3 restarts I tried. GDM featured variously, as did utmp.  Not knowing  much at that level, I can only report that plymouth 0.9.3-3 doesn't fix the hang I reported upthread.  Nor does it change the lack of either keyboard or usb mouse/touchpad access for at least 90s of that hang.
Another symptom, just noticed because of all the restarts, is that wireless networking gets a
significant delay before kicking in after the handover to Gnome - about 30s.  With the 16.04 I dual
boot this machine to, wireless networking is ready to go almost as soon as the UI is up.

Reinstalling haveged returns the good handover to Gnome - about 20s, but wireless networking stays
slow to begin its work.

Note that uninstalling plymouth 0.9.3-3 returns the listing of 0.9.3-1 to the system, but a
couple of the Ubuntu display dependencies needed also to be reinstalled to get back a
coherent recognisable splash screen progress.
Probably time for me to get familiar with using the shell at startup.  That UI looks like a real
curate's egg and this is a significant bug (or set of bugs maybe).

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https://bugs.launchpad.net/bugs/1779476

Title:
  Boot process hangs indefinitely. Never finishes.

Status in gdm3 package in Ubuntu:
  Incomplete
Status in linux package in Ubuntu:
  Incomplete
Status in plymouth package in Ubuntu:
  Incomplete
Status in plymouth package in Debian:
  Fix Released

Bug description:
  After update of gdm and kernel gdm3 no longer enables graphics.

  What happens:
  =============
  With and without:
     WaylandEnable=false
  in /etc/gdm3/custom.conf
  gdm3 does not switch to graphics.
  In both cases I case the X process running (Xwayland or Xorg) but no vt has it.
  lightdm does work, but barely. It takes up to a minute to get to the login screen.

  What I expected to happen:
  ==========================
  gdm3 switching to graphics in ~20 after boot like pre-update.

  Release:
  ========
  $ lsb_release -rd
  Description:	Ubuntu 18.04 LTS
  Release:	18.04
  $ apt-cache policy kernel-common gdm3 lightdm xorg xwayland
  kernel-common:
    Installed: (none)
    Candidate: 13.018+nmu1
    Version table:
       13.018+nmu1 500
          500 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
          500 http://us.archive.ubuntu.com/ubuntu bionic/universe i386 Packages
  gdm3:
    Installed: 3.28.2-0ubuntu1.3
    Candidate: 3.28.2-0ubuntu1.3
    Version table:
   *** 3.28.2-0ubuntu1.3 500
          500 http://us.archive.ubuntu.com/ubuntu bionic-proposed/main amd64 Packages
          100 /var/lib/dpkg/status
       3.28.2-0ubuntu1.2 500
          500 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
       3.28.0-0ubuntu1 500
          500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
  lightdm:
    Installed: 1.26.0-0ubuntu1
    Candidate: 1.26.0-0ubuntu1
    Version table:
   *** 1.26.0-0ubuntu1 500
          500 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
          100 /var/lib/dpkg/status
  xorg:
    Installed: 1:7.7+19ubuntu7
    Candidate: 1:7.7+19ubuntu7
    Version table:
   *** 1:7.7+19ubuntu7 500
          500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
          100 /var/lib/dpkg/status
  xwayland:
    Installed: 2:1.19.6-1ubuntu4
    Candidate: 2:1.19.6-1ubuntu4
    Version table:
   *** 2:1.19.6-1ubuntu4 500
          500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
          100 /var/lib/dpkg/status


  
  Attaching journalctl -b.
  --- 
  ProblemType: Bug
  ApportVersion: 2.20.9-0ubuntu7.2
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  DistroRelease: Ubuntu 18.04
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2016-08-27 (673 days ago)
  InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
  NonfreeKernelModules: wl
  Package: gdm3 3.28.2-0ubuntu1.3
  PackageArchitecture: amd64
  ProcVersionSignature: Ubuntu 4.15.0-24.26-generic 4.15.18
  Tags:  bionic package-from-proposed
  Uname: Linux 4.15.0-24-generic x86_64
  UpgradeStatus: Upgraded to bionic on 2018-05-05 (58 days ago)
  UserGroups: adm cdrom dip docker lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  mtime.conffile..etc.gdm3.custom.conf: 2018-06-30T11:12:29.280424
  --- 
  ProblemType: Bug
  ApportVersion: 2.20.9-0ubuntu7.2
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  DistroRelease: Ubuntu 18.04
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2016-08-27 (674 days ago)
  InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
  NonfreeKernelModules: wl
  Package: linux
  PackageArchitecture: amd64
  ProcVersionSignature: Ubuntu 4.15.0-24.26-generic 4.15.18
  Tags:  bionic package-from-proposed
  Uname: Linux 4.15.0-24-generic x86_64
  UpgradeStatus: Upgraded to bionic on 2018-05-05 (58 days ago)
  UserGroups: adm cdrom dip docker lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  modified.conffile..etc.gdm3.custom.conf: [modified]
  mtime.conffile..etc.gdm3.custom.conf: 2018-06-30T11:12:29.280424

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