[Bug 1570379] Re: when I upgrade from ubuntu 14.04 to ubuntu 15.10, after downloading the upgrades and installing, then the laptop goes blank, displays nothing, even when I reboot, it starts but it doesn't go to welcome screen, wents off again.

[Ubuntu Foundations Team Bug Bot]

** Tags added: trusty2xenial

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https://bugs.launchpad.net/bugs/1570379

Title:
  when I upgrade from ubuntu 14.04 to ubuntu 15.10, after downloading
  the upgrades and installing, then the laptop goes blank, displays
  nothing, even when I reboot, it starts but it doesn't go to welcome
  screen, wents off again.

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

Bug description:
  I want to upgrade from ubuntu 14.04 to ubuntu 15.10, but after
  updating the system software, and it tells me that my system is up to
  date, but there's a new version available, which is ubuntu 15.10, i
  agreed to upgrade, after upgrading, it downloads the upgrades, then it
  starts to install them, but before booting, the screen goes off,
  blank, nothing displays and I dont see any progress then, I waited for
  about morebthan seventy minutes but nothing happened, I decided to
  shut down the laptop manually, then I switched it on again, it starts
  to boot, displaying the name Ubuntu indicating that the system is
  loading, after few seconds before the welcome screen displays, it goes
  off again, displays nothing, that is, the screen become blank.

  then I decided to reinstall ubuntu 14.04 from live dvd, .

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.8
  ProcVersionSignature: Ubuntu 3.19.0-58.64~14.04.1-generic 3.19.8-ckt16
  Uname: Linux 3.19.0-58-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Thu Apr 14 16:03:11 2016
  InstallationDate: Installed on 2016-04-12 (1 days ago)
  InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2016-04-14 (0 days ago)

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