Public bug reported:
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:
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug dist-upgrade xenial xubuntu-exp
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https://bugs.launchpad.net/bugs/1559463
Title:
Upgrade trusty -> xenial failed - blank screen
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