[Bug 1559463] Re: Upgrade trusty -> xenial failed - blank screen

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1559463

Title:
  Upgrade trusty -> xenial failed - blank screen

Status in ubuntu-release-upgrader package in Ubuntu:
  Confirmed

Bug description:
  My upgrade partly failed. Upgrade manager prepared  the upgrade,
  downloaded the packages and went thru the installation and setup
  phase. During this phase, the display just blanked. The laptop was not
  shut down. Thought the system freezed, as I was completely locked out
  - no switch to console possible, nor a ssh login from another system.

  Solution:
  Hard reset and boot. The system booted at least, but no X, nor network connection working, just a console. A "dpkg --configure -a" resumed the setup and completed successfully. Reboot and now I have a smooth Xenial system :-)

  During the preparation I got a warning about a running screensaver and
  xclock - something and a possible lockout. The screensaver was
  actually disabled, but a process was running. Just killed it and
  proceeded.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.8
  ProcVersionSignature: Ubuntu 4.4.0-14.30-generic 4.4.5
  Uname: Linux 4.4.0-14-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  CrashDB: ubuntu
  Date: Sat Mar 19 14:20:48 2016
  InstallationDate: Installed on 2014-02-26 (751 days ago)
  InstallationMedia: Xubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Symptom: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2016-03-19 (0 days ago)
  VarLogDistupgradeTermlog:

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