[Bug 1555237] Re: Upgrade from 14.04.4→ 16.04 dies midway taking out the session.

[gerry_the_hat]

In order to recreate things I virtualized my laptop (backup and restore
into a VM). So from now an, it should be much easier :-)

However, I'm bit struck. Performed the upgrade once more with same
result: system is some kind of frozen. Compared the distupgrader's logs
with my previous attempt and failed to find a common pattern. At least
one thing I can say for sure: does not have someting to do with
screensavers, as this was disabled at all, same goes for the power saver
settings. I also checked the logs from Dave's attempt without finding
something similar to mine...

Well, I'm willing to rerun an upgrade, but need assistance to increase
the logging level for instance. Think we need more data to dig deeper.

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https://bugs.launchpad.net/bugs/1555237

Title:
  Upgrade from 14.04.4→ 16.04 dies midway taking out the session.

Status in compiz package in Ubuntu:
  Confirmed
Status in ubuntu-release-upgrader package in Ubuntu:
  In Progress

Bug description:
  STEPS:
  1. Install 14.04.4 on a uefi securebooted system
  2. update it
  3. Install openssh-server for debug access
  4. reboot
  5. Hit alt+f2
  6. Type update-manager -d and hit enter

  EXPECTED:
  I expected a smooth transition to 16.04

  ACTUAL:
  System is completely taken out mid way through the process killing the session and x also no tty when hitting ctrl+alt+f1-6

  ---

  TESTS RESULTS (from cyphermox):

  On amd64 (no EFI) under qemu/libvirt, qxl graphics:
  - upgrading just libglib2.0-0 from 16.04 on top of 14.04.4: PASS
  - upgrading ubuntu-desktop (running gnome-shell) 14.04.4 to 16.04: PASS
  - upgrading ubuntu-desktop (running xubuntu-session) 14.04.4 to 16.04: PASS
  - manually upgrading compiz and other packages to 16.04 versions; after adding xenial sources:
    - compiz and related packages (http://paste.ubuntu.com/15415280/) : PASS
    - xserver-xorg and related: PASS
    - unity and related: PASS
    - ubuntu-desktop: PASS
    - libgl1-mesa-dri: PASS
    - apt-get dist-upgrade: FAIL (screensaver may have kicked in)
  - standard upgrading 14.04.4 to 16.04; screensaver disabled: FAIL (looked fine, but upgrade eventually froze, might well be a different issue)
  - re-enabling screensaver after upgrade, before reboot: TODO (above failed)

  On ppc64el:
  - upgrading ubuntu-server 14.04.4 -> 16.04: PASS

  ---

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:0.220.8
  ProcVersionSignature: Ubuntu 4.2.0-30.36~14.04.1-generic 4.2.8-ckt3
  Uname: Linux 4.2.0-30-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  CrashDB: ubuntu
  Date: Wed Mar  9 17:01:27 2016
  InstallationDate: Installed on 2016-03-04 (5 days ago)
  InstallationMedia: Ubuntu 14.04.4 LTS "Trusty Tahr" - Beta amd64 (20160224)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Symptom: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2016-03-09 (0 days ago)
  VarLogDistupgradeTermlog:

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