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[Bug 1311316] Re: After locking screen there is no input field to type password for unlock

 

Same problem here:
  - No LDAP
  - Dual-monitor setup (Intel HD graphics in i7-4770)
  - Usually two users are logged in graphically (VC 7 and 8)
  - Usually it starts happening for the second user (VC 8):
      - The box on the locked screen shows the user's name,
      - The box does not show the password entry field,
      - There are no icons shown in the top bar (i.e. no way to shutdown).
  - As long as the problem doesn't happen on the other VC, the session on the
    problematic VC can be recovered by:
      - Switching to the still working VC (which is in locked screen mode),
      - Clicking on the icon in the upper right corner, and selection "Switch
        Account...". Directly selecting the right account in the menu does NOT
        work, and merely switches to the problematic VC.
      - A new lightdm session appears. Log in with the account of the user
        whose session has problems.
      - The system switches to the problematic VC, and unlocks it.
  - Logging in on text VC1 and running "unity --replace" unlocks the
    problematic VC, but kills compiz.
  - Running "compiz --replace" in the graphical session restarts compiz, and
    locks the screen again, now showing a password entry box.
  - After unlocking the screen, everything works again, but all open windows
    have been been moved to the first desktop, so I have to untangle the desktop
    clutter manually.

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https://bugs.launchpad.net/bugs/1311316

Title:
  After locking screen there is no input field to type password for
  unlock

Status in Unity:
  Fix Committed
Status in Unity 7.2 series:
  In Progress
Status in unity package in Ubuntu:
  Fix Released

Bug description:
  *** IMPORTANT **

  *** The fix is not included in TRUSTY. Will be included with next SRU.
  ***

  If you can reproduce this bug please be sure to provide the following info:
  1. Do you use a multi-head setup? If yes, using just one monitor fixes the issue?
  2. Can you reproduce all the time?
  3. Do you use ldap? If yes, using gnome-screensaver fix the issue (see comment #115) can you still reproduce that?
  4. Please consider posting /var/log/auth.log (at least part of it, should not contain sensitive information)
  5. Please specify the unity version
  *** END IMPORTANT **

  Sometimes (but not always) after locking the screen there is the
  situation not having any input field where I can type the password to
  unlock the session again. The shaded gray area simply does not have
  the input field. I can't do anything, I have to switch to text console
  and stop/start lightdm service to cure the problem loosing all of my
  session :(

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: unity 7.2.0+14.04.20140416-0ubuntu1
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic i686
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: i386
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CurrentDesktop: Unity
  Date: Tue Apr 22 22:17:57 2014
  InstallationDate: Installed on 2012-03-03 (780 days ago)
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
  SourcePackage: unity
  UpgradeStatus: Upgraded to trusty on 2013-10-18 (186 days ago)

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References