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[Lucho Nacho <livalenz@xxxxx>]

My screen also crashes (weird lines/colors) when I lock the screen. What
I know so far is that it is the ATI driver since when using X.org
drivers this doesn't happen. Furthermore, it seems is a problem of
LightDM because this happens when locking but not when suspending
(which doesn't ask me to log in again).

I have Xubuntu 14.04. Upgraded to 14.04.2 and still same problem. I
don't know how to report the bug since there is no formal crash in the
sense that I need to reboot the computer. I can either log out
(ctrl+alt+supr) or switch to another session (ctrl+alt+f1) and then go
back to x-session (ctrl+alt+f7), which apparently restarts lightdm?

More info here: http://askubuntu.com/questions/576996/screen-problem-
with-ati-drivers-but-not-with-x-org

-- 
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Packages, which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1333079

Title:
  Crash on locking screen on closing laptop lid - lightdm

Status in xorg package in Ubuntu:
  Incomplete

Bug description:
  Crash report header:
  ProblemType: Crash
  Architecture: amd64
  CrashCounter: 1
  Date: Mon Jun 23 03:53:12 2014
  DistroRelease: Ubuntu 14.04
  ExecutablePath: /usr/bin/Xorg
  ExecutableTimestamp: 1397655517
  ProcCmdline: /usr/bin/X -core :1 -seat seat0 -auth /var/run/lightdm/root/:1 -nolisten tcp vt8 -novtswitch
  ProcCwd: /etc/X11
  ProcEnviron:
  ProcMaps:
  ....

  
  /usr/bin/X -core :1 -seat seat0 -auth /var/run/lightdm/root/:1 -nolisten tcp vt8 -novtswitch on command line gives same issue. ctrl-alt-delete sometimes causes reboot, otherwise i need to remove a/c and battery

  problem is new following 14.04 upgrade (lightdm is new to 14.04)

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xorg 1:7.7+1ubuntu8
  ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2
  Uname: Linux 3.13.0-29-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  Date: Mon Jun 23 05:04:13 2014
  InstallationDate: Installed on 2014-02-15 (127 days ago)
  InstallationMedia: Xubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016)
  ProcEnviron:
   LANGUAGE=en_GB:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: xorg
  UpgradeStatus: Upgraded to trusty on 2014-06-22 (0 days ago)

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