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[Robert Ancell <robert.ancell@xxxxxxxxxxxxx>]

** Package changed: lightdm (Ubuntu) => unity-greeter (Ubuntu)

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https://bugs.launchpad.net/bugs/1441193

Title:
  Login screen crashes after HDMI cable is plugged in, resumed from
  suspend

Status in unity-greeter package in Ubuntu:
  New

Bug description:
  I have a laptop that I connect to an external monitor. After I open
  the lid and hit a button to wake the computer I will connect the HDMI
  cable for the monitor. After plugging in the HDMI, the login screen
  freezes intermittently so I can't type in my password. The mouse is
  missing and unresponsive and the keyboard doesn't type anything.

  To fix this I press Ctrl-Alt-F1 and log into the terminal. I then use
  the command "sudo service lightdm restart" to restart the window
  manager. This fixes the login issue, however it also closes all of the
  open applications that I had on suspend, which is not desirable.

  Sometimes, after typing in my password once I've restarted lightdm,
  the display will get locked into a weird "refresh" state, where the
  user session doesn't start and the screen is stuck with no window
  manager, no dash, and the background is partially on both screens.

  If the computer gets into this weird display mode then the only fix is
  to reboot. I would like to be able to plug in the HDMI from a sleep
  and be assured that the computer can recover the running session
  without crashing the login screen or the display manager.

  Repro steps:

  - Close laptop lid to put it to sleep
  - Connect HDMI cable
  - Open lid and press button (optionally, open lid then connect cable)

  Graphics:

  - Intel HD 4000

  Computer:

  - Lenovo Yoga Pro 2

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: lightdm 1.12.3-0ubuntu1
  ProcVersionSignature: Ubuntu 3.16.0-34.45-generic 3.16.7-ckt8
  Uname: Linux 3.16.0-34-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8.2
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Tue Apr  7 07:14:29 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-12-18 (110 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  SourcePackage: lightdm
  UpgradeStatus: No upgrade log present (probably fresh install)

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