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[Bug 886579] [NEW] user switching from screen lock freezes system

 

Public bug reported:

There are tow or more users logged in system but last has locked the screen.
Move mouse. Authentication dialogue appears.
Click Switch User.
Lightdm login screen appears.
Select user (allready logged in but with locked session) and type password and enter.
Screen goes black (or somtimes a gray bar appears at bottom of screen). Fan gets noisy so some process probably went crazy.  Only way out is reset button.
I can however switch user by ctr-alt Fn (if I know which tty my session is)

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: lightdm 1.0.1-0ubuntu6
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic-pae 3.0.4
Uname: Linux 3.0.0-12-generic-pae i686
NonfreeKernelModules: fglrx
ApportVersion: 1.23-0ubuntu4
Architecture: i386
Date: Sat Nov  5 17:08:00 2011
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 LANG=fi_FI.utf8
 SHELL=/bin/bash
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: lightdm (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 oneiric running-unity

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Packages, which is subscribed to lightdm in Ubuntu.
https://bugs.launchpad.net/bugs/886579

Title:
  user switching from screen lock freezes system

Status in “lightdm” package in Ubuntu:
  New

Bug description:
  There are tow or more users logged in system but last has locked the screen.
  Move mouse. Authentication dialogue appears.
  Click Switch User.
  Lightdm login screen appears.
  Select user (allready logged in but with locked session) and type password and enter.
  Screen goes black (or somtimes a gray bar appears at bottom of screen). Fan gets noisy so some process probably went crazy.  Only way out is reset button.
  I can however switch user by ctr-alt Fn (if I know which tty my session is)

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: lightdm 1.0.1-0ubuntu6
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic-pae 3.0.4
  Uname: Linux 3.0.0-12-generic-pae i686
  NonfreeKernelModules: fglrx
  ApportVersion: 1.23-0ubuntu4
  Architecture: i386
  Date: Sat Nov  5 17:08:00 2011
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
  ProcEnviron:
   LANGUAGE=en_GB:en
   PATH=(custom, no user)
   LANG=fi_FI.utf8
   SHELL=/bin/bash
  SourcePackage: lightdm
  UpgradeStatus: No upgrade log present (probably fresh install)

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References