Xorg crashed with SIGABRT in OsAbort() when activate accessibility magnifier in gnome

Description: Ubuntu Trusty Tahr (development branch)
Release: 14.04

1. Active accessibility magnifier in Gnome
2. Sceen zoomed then after around 2 seconds Gnome crash.
3. Gnome restarted automatically with zoomed screen then crash again
4. Then again 3rd time crash, desktop icons showed, no gnome panel/launcher bar, no zoom

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: xserver-xorg-core 2:1.15.0-1ubuntu7
ProcVersionSignature: Ubuntu 3.13.0-19.40-generic 3.13.6
Uname: Linux 3.13.0-19-generic x86_64
NonfreeKernelModules: nvidia
.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 331.38 Wed Jan 8 19:32:30 PST 2014
 GCC version: gcc version 4.8.2 (Ubuntu 4.8.2-17ubuntu1)
.tmp.unity.support.test.0:

ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
Date: Thu Mar 27 14:43:57 2014
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
ExecutablePath: /usr/bin/Xorg
GraphicsCard:
 NVIDIA Corporation GT218M [NVS 3100M] [10de:0a6c] (rev a2) (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:040a]
JockeyStatus:
 kmod:wl - Broadcom STA wireless driver (Proprietary, Disabled, Not in use) [auto-install]
 kmod:nvidia_304_updates - NVIDIA legacy binary driver - version 304.117 (Proprietary, Disabled, Not in use)
 kmod:nvidia_331 - NVIDIA binary driver - version 331.38 (Proprietary, Disabled, Not in use)
 kmod:nvidia_331_updates - nvidia_331_updates (Proprietary, Enabled, Not in use)
 kmod:nvidia_304 - NVIDIA legacy binary driver - version 304.117 (Proprietary, Disabled, Not in use)
LightdmGreeterLog: ** (lightdm-gtk-greeter:2640): WARNING **: Failed to load user image: Failed to open file '/home/sneetsher/.face': No such file or directory
LightdmGreeterLogOld: ** (lightdm-gtk-greeter:2492): WARNING **: Failed to load user image: Failed to open file '/home/sneetsher/.face': No such file or directory
MachineType: Dell Inc. Latitude E6410
ProcCmdline: /usr/bin/X :0 -background none -verbose -logverbose 7 -core -auth /var/run/gdm/auth-for-gdm-tCSTnU/database -seat seat0 -nolisten tcp vt7
ProcEnviron:
 LANG=en_US.UTF-8
 TERM=linux
 PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-19-generic root=UUID=4c0c4c6d-708b-45b0-b9e9-a5e6a7de491e ro persistent quiet splash
Signal: 6
SourcePackage: nvidia-graphics-drivers
StacktraceTop:
 OsAbort ()
 ?? ()
 FatalError ()
 LockServer ()
 OsInit ()
Title: Xorg crashed with SIGABRT in OsAbort()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

dmi.bios.date: 12/05/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A16
dmi.board.name: 0K42JR
dmi.board.vendor: Dell Inc.
dmi.board.version: A03
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA16:bd12/05/2013:svnDellInc.:pnLatitudeE6410:pvr0001:rvnDellInc.:rn0K42JR:rvrA03:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E6410
dmi.product.version: 0001
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.11+14.04.20140320.1-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-1ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-1ubuntu1
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.15.0-1ubuntu7
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
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: Thu Mar 27 14:47:51 2014
xserver.configfile: default
xserver.devices:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:

xserver.version: 2:1.15.0-1ubuntu7