Ubuntu 11.10, with lightdm 1.0.6 with nvidia 173.14.30 drivers.
User A logs in. User B then users the Switch User Account indicator, locking user A's session. After completing their task, user B, leaves the computer, and the screen saver starts, locking the session. User A returns to the computer, and switches to their session. After unlocking their session, the desktop background is corrupted, and displays User B's background wallpaper and files and folders on user B's desktop. User A cannot interact with User B files and folders, and can clearly read the file and folder names!
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.proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
NVRM version: NVIDIA UNIX x86_64 Kernel Module 295.20 Mon Feb 6 21:07:30 PST 2012
GCC version: gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu3)
.tmp.unity.support.test.0:
ApportVersion: 1.94.1-0ubuntu2
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: compiz
DistUpgraded: 2012-03-13 19:21:38,993 DEBUG enabling apt cron job
DistroCodename: precise
DistroRelease: Ubuntu 12.04
DistroVariant: ubuntu
DkmsStatus: nvidia-current-updates, 295.20, 3.2.0-19-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
NVIDIA Corporation G92 [GeForce 8800 GT] [10de:0611] (rev a2) (prog-if 00 [VGA controller])
Subsystem: ZOTAC International (MCO) Ltd. ZT-88TES2P-FSP [19da:1040]
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
JockeyStatus:
xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Disabled, Not in use)
xorg:nvidia_current_updates - NVIDIA accelerated graphics driver (post-release updates) (Proprietary, Enabled, In use)
MachineType: Gigabyte Technology Co., Ltd. EP35C-DS3R
NonfreeKernelModules: nvidia
Package: xorg 1:7.6+10ubuntu1
PackageArchitecture: amd64
ProcEnviron:
LANGUAGE=en_GB:en
TERM=xterm
LANG=en_GB.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-19-generic root=UUID=5ac422f1-6c2e-4779-8667-744a293c8afc ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.2.0-19.30-generic 3.2.11
Tags: precise ubuntu single-occurrence compiz-0.9
Uname: Linux 3.2.0-19-generic x86_64
UpgradeStatus: Upgraded to precise on 2012-03-20 (1 days ago)
UserGroups: adm admin cdrom debian-tor dialout lpadmin plugdev sambashare
XorgConf:
Section "Device"
Identifier "Default Device"
Option "NoLogo" "True"
EndSection
dmi.bios.date: 06/18/2009
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F4
dmi.board.name: EP35C-DS3R
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF4:bd06/18/2009:svnGigabyteTechnologyCo.,Ltd.:pnEP35C-DS3R:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnEP35C-DS3R:rvr:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: EP35C-DS3R
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz 1:0.9.7.0+bzr3035-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.30-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.1-0ubuntu5
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.1-0ubuntu5
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2
Hi Richard,
This looks like a video driver bug. What video card do you have?