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 -- You received this bug notification because you are a member of Desktop 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) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1333079/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

