When using the proprietary Nvidia drivers, the output from one window is often stretched to cover both by Unity. Other window managers don't have this problem, and if you manually configure the display output locations and sizes in ccsm, Unity displays it correctly. One thing that I noticed is that the standard xrandr-based Displays panel in System Settings shows both outputs, but nvidia-settings shows only the external monitor.
When using the proprietary Nvidia drivers, the output from one window is often stretched to cover both by Unity. Other window managers don't have this problem, and if you manually configure the display output locations and sizes in ccsm, Unity displays it correctly. One thing that I noticed is that the standard xrandr-based Displays panel in System Settings shows both outputs, but nvidia-settings shows only the external monitor.
Possibly related bugs: #1394665 #1382462
ProblemType: Bug ature: Ubuntu 3.16.0- 30.40-generic 3.16.7-ckt3 dules: nvidia nvidia. gpus.0: Error: [Errno 21] Is a directory: '/proc/ driver/ nvidia/ gpus/0' nvidia. registry: Binary: "" nvidia. version: support. test.0:
DistroRelease: Ubuntu 14.10
Package: xorg 1:7.7+7ubuntu2
ProcVersionSign
Uname: Linux 3.16.0-30-generic x86_64
NonfreeKernelMo
.proc.driver.
.proc.driver.
.proc.driver.
NVRM version: NVIDIA UNIX x86_64 Kernel Module 331.113 Mon Dec 1 21:08:13 PST 2014
GCC version: gcc version 4.9.1 (Ubuntu 4.9.1-16ubuntu6)
.tmp.unity.
ApportVersion: 2.14.7-0ubuntu8.1 compiz- 1/general/ screen0/ options/ active_ plugins' irectDriverBlac klist: '(nouveau| Intel). *Mesa 8.0' irectFSW: true nterest: Yes, including running git bisection searches /boot/vmlinuz- 3.16.0- 30-generic root=UUID= 9109c691- e957-4565- 9b36-125458c0d2 42 ro quiet splash resume= UUID=9109c691e9 5745659b3612545 8c0d242: 0x194ac758 crashkernel= 384M-:128M asset.tag: Not Available asset.tag: No Asset Information version: Not Available bvr8BET62WW( 1.42):bd07/ 26/2013: svnLENOVO: pn42763JU: pvrThinkPadW520 :rvnLENOVO: rn42763JU: rvrNotAvailable :cvnLENOVO: ct10:cvrNotAvai lable: version: ThinkPad W520 14.10.20140918- 0ubuntu1 libgl1- mesa-dri: libgl1-mesa-dri 10.3.2-0ubuntu0.1 libgl1- mesa-dri- experimental: libgl1- mesa-dri- experimental N/A libgl1- mesa-glx: libgl1-mesa-glx 10.3.2-0ubuntu0.1 nvidia- graphics- drivers: nvidia- graphics- drivers N/A xserver- xorg-core: xserver-xorg-core 2:1.16.0-1ubuntu1.2 xserver- xorg-input- evdev: xserver- xorg-input- evdev 1:2.9.0-1ubuntu2 xserver- xorg-video- ati: xserver- xorg-video- ati 1:7.4.0-2ubuntu2 xserver- xorg-video- intel: xserver- xorg-video- intel 2:2.99. 914-1~exp1ubunt u4.1 xserver- xorg-video- nouveau: xserver- xorg-video- nouveau 1:1.0.11-1ubuntu2
Architecture: amd64
CompizPlugins: No value set for `/apps/
CompositorRunning: compiz
CompositorUnred
CompositorUnred
CurrentDesktop: Unity
Date: Tue Feb 3 11:00:10 2015
DistUpgraded: 2015-02-02 14:33:00,623 DEBUG enabling apt cron job
DistroCodename: utopic
DistroVariant: ubuntu
ExtraDebuggingI
GraphicsCard:
Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device [17aa:21d1]
NVIDIA Corporation GF108GLM [Quadro 1000M] [10de:0dfa] (rev a1) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device [17aa:21d1]
InstallationDate: Installed on 2013-01-29 (735 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MachineType: LENOVO 42763JU
ProcKernelCmdLine: BOOT_IMAGE=
SourcePackage: xorg
UpgradeStatus: Upgraded to utopic on 2015-02-02 (0 days ago)
dmi.bios.date: 07/26/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: 8BET62WW (1.42 )
dmi.board.
dmi.board.name: 42763JU
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 42763JU
dmi.product.
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.12+
version.ia32-libs: ia32-libs 20090808ubuntu36
version.libdrm2: libdrm2 2.4.56-1
version.
version.
version.
version.
version.
version.
version.
version.
version.
xserver.bootTime: Mon Feb 2 18:16:27 2015
xserver.configfile: /etc/X11/xorg.conf
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
product id 16562
vendor LEN
xserver.version: 2:1.16.0-1ubuntu1.2