Public bug reported:

up-to-date Ubuntu 12.04, 3.2.0-26-generic 64 bits linux kernel, Unity 3D
desktop, nvidia proprietary drivers -post release-

Unity 5.12-0ubuntu1.1
compiz 1:0.9.7.8-0ubuntu1

Steps to reproduce
1) Click the BFB to open de dash
2) click restore button to unmaximize the dash if it is maximized, or double 
click to maximize-restore

Expected:
the dash is unmaximized, the wallpaper/others windows opened can be viewed 
normally to the right of the dash and under it

What happened instead:
the dash is display unmaximized, with its border and shadow. However the rest 
of the screen (to the right and under the dash) is shown black.
moving the mouse over some of the icons in the dash/section tittles or typing 
some text redraws the screen and solves the problem

Screenshot attached
This only happen in Unity 3D, Unity 2D works ok. I think the problem appeared 
after the last Unity update, but can't confirm

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.12-0ubuntu1.1
ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19
Uname: Linux 3.2.0-26-generic x86_64
NonfreeKernelModules: nvidia
.proc.driver.nvidia.gpus.0: Error: [Errno 21] Es un directorio: 
'/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module  295.49  Mon Apr 30 23:46:33 
PDT 2012
 GCC version:  gcc versión 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)
.tmp.unity.support.test.0:
 
ApportVersion: 2.0.1-0ubuntu8
Architecture: amd64
CheckboxSubmission: b23fd1eb547d2c30cac0498050917734
CheckboxSystem: edda5d4f616ca792bf437989cb597002
CompizPlugins: 
[core,composite,opengl,decor,imgpng,imgsvg,imgjpeg,compiztoolbox,place,session,vpswitch,mousepoll,regex,text,grid,resize,move,gnomecompat,wall,obs,animation,wobbly,workarounds,expo,fade,ezoom,scale,scaleaddon,unityshell]
CompositorRunning: compiz
Date: Mon Jul  2 12:26:48 2012
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
DkmsStatus:
 nvidia-current, 295.40, 3.2.0-25-generic, x86_64: installed
 nvidia-current, 295.40, 3.2.0-26-generic, x86_64: installed
 nvidia-current-updates, 295.49, 3.2.0-25-generic, x86_64: installed
 nvidia-current-updates, 295.49, 3.2.0-26-generic, x86_64: installed
 vboxhost, 4.1.18, 3.2.0-26-generic, x86_64: installed
GraphicsCard:
 NVIDIA Corporation C68 [GeForce 7050 PV / nForce 630a] [10de:053b] (rev a2) 
(prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. Device [1043:82b3]
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 
(20120425)
JockeyStatus:
 xorg:nvidia_current - Controlador de aceleración gráfica para tarjetas NVIDIA 
(Privativo, Desactivado, No está en uso)
 xorg:nvidia_current_updates - Controlador de gráficos acelerados de NVIDIA 
(actualizaciones post-lanzamiento) (Privativo, Activado, En uso)
MachineType: System manufacturer System Product Name
ProcEnviron:
 LANGUAGE=es_AR:es
 TERM=xterm
 PATH=(custom, no user)
 LANG=es_AR.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-26-generic 
root=UUID=52d0d3cf-a16b-42b9-a50e-3f9446f2138c ro quiet splash vga=792 
vt.handoff=7 vt.handoff=7
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/19/2008
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0905
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: M2N-VM DVI
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev x.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr0905:bd12/19/2008:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM2N-VMDVI:rvrRevx.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
version.compiz: compiz 1:0.9.7.8-0ubuntu1
version.ia32-libs: ia32-libs 20090808ubuntu36
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu3.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu3.1
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1.2
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

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


** Tags: amd64 apport-bug compiz-0.9 precise regression-update ubuntu

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https://bugs.launchpad.net/bugs/1020153

Title:
  Restoring dash size shows black area around

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