[Bug 990693] Re: Return to login screen after press enter key

[hfinger]

** Information type changed from Public to Public Security

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https://bugs.launchpad.net/bugs/990693

Title:
  Return to login screen after press enter key

Status in “preseed” package in Ubuntu:
  Confirmed

Bug description:
  Three times in two days i noticed this bug.
  After I pressed the enter key on the keyboard ubuntu returned to the login screen with a logout of the current session.
  I can't reproduce the bug because i think it happens randomly (one time when i copied two files and another time when i surfed with chrome).

  I use Ubuntu 12.04 64Bit and I installed only Keepass2, Chrome and the driver amd 12.4. The system is clean like out of the box.
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu6
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  ryuzaki    3001 F.... pulseaudio
   /dev/snd/controlC0:  ryuzaki    3001 F.... pulseaudio
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xfe700000 irq 58'
     Mixer name	: 'Realtek ALC892'
     Components	: 'HDA:10ec0892,18492892,00100302'
     Controls      : 43
     Simple ctrls  : 20
  Card1.Amixer.info:
   Card hw:1 'Generic'/'HD-Audio Generic at 0xfe640000 irq 59'
     Mixer name	: 'ATI R6xx HDMI'
     Components	: 'HDA:1002aa01,00aa0100,00100200'
     Controls      : 6
     Simple ctrls  : 1
  Card1.Amixer.values:
   Simple mixer control 'IEC958',0
     Capabilities: pswitch pswitch-joined penum
     Playback channels: Mono
     Mono: Playback [on]
  DistroRelease: Ubuntu 12.04
  HibernationDevice: RESUME=UUID=2bfae566-9b6b-489f-942f-3a945eb9853f
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  IwConfig:
   lo        no wireless extensions.
   
   eth0      no wireless extensions.
  MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
  NonfreeKernelModules: fglrx
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=it_IT.UTF-8
   SHELL=/bin/bash
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic root=UUID=908c2284-25bc-460e-8f2d-459bfd12d007 ro quiet splash
  ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-24-generic N/A
   linux-backports-modules-3.2.0-24-generic  N/A
   linux-firmware                            1.79
  RfKill:
   
  SourcePackage: linux
  StagingDrivers: mei
  Tags:  precise staging precise staging
  Uname: Linux 3.2.0-24-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 08/30/2011
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: P2.10
  dmi.board.name: P67 Extreme4
  dmi.board.vendor: ASRock
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP2.10:bd08/30/2011:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnP67Extreme4:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: To Be Filled By O.E.M.
  dmi.product.version: To Be Filled By O.E.M.
  dmi.sys.vendor: To Be Filled By O.E.M.

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