Public bug reported:

I'm using a System76 Pangolin. I recently upgraded from 13.04 to 13.10
and thereafter to 14.04. Since I've upgraded, the lock screen no longer
works, either through the power menu in the top right corner or using
the keyboard shortcut. When I try, a very low opacity overlay of my
wallpaper appears on the screen for a second and disappears. All other
Unity functions (Dash, HUD, etc) seem to be working.

Let me know if additional information is required.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xorg 1:7.7+1ubuntu8
ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
.tmp.unity.support.test.0:
 
ApportVersion: 2.14.1-0ubuntu3.1
Architecture: amd64
CompizPlugins: 
[core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Sat May 17 22:58:11 2014
DistUpgraded: 2014-05-16 15:27:57,795 DEBUG enabling apt cron job
DistroCodename: trusty
DistroVariant: ubuntu
DkmsStatus:
 rts_bpp, 1.1, 3.0.0-17-generic, x86_64: built
 rts_bpp, 1.1, 3.2.0-32-generic, x86_64: installed
 rts_bpp, 1.1, 3.5.0-28-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 
09) (prog-if 00 [VGA controller])
   Subsystem: CLEVO/KAPOK Computer Device [1558:0240]
InstallationDate: Installed on 2012-04-26 (750 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 
(20120425)
MachineType: System76, Inc. Pangolin Performance
ProcEnviron:
 LANGUAGE=en_IN:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_IN
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic 
root=UUID=96551326-e461-4071-ab9c-0e81ad7015d7 ro quiet splash 
intel_pstate=enable vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to trusty on 2014-05-16 (1 days ago)
dmi.bios.date: 06/25/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: Tag 12345
dmi.board.name: Pangolin Performance
dmi.board.vendor: System76, Inc.
dmi.board.version: panp9
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: No Enclosure
dmi.chassis.version: N/A
dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd06/25/2012:svnSystem76,Inc.:pnPangolinPerformance:pvrpanp9:rvnSystem76,Inc.:rnPangolinPerformance:rvrpanp9:cvnNoEnclosure:ct10:cvrN/A:
dmi.product.name: Pangolin Performance
dmi.product.version: panp9
dmi.sys.vendor: System76, Inc.
version.compiz: compiz 1:0.9.11+14.04.20140423-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-4ubuntu5
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-4ubuntu5
version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Sat May 17 10:43:30 2014
xserver.configfile: default
xserver.errors:
 
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id                                 826 
 vendor                                     LGD
xserver.version: 2:1.15.1-0ubuntu2

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


** Tags: amd64 apport-bug compiz-0.9 trusty ubuntu

-- 
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1320527

Title:
  lock screen doesn't work

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https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1320527/+subscriptions

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