expo compiz lock notebook black screen

[edercirico]

using compiz expo is caught with black screen on ubuntu 14.04

My hardware is HP Pavilion DV2000
AMD Turion VGA Nvidia GO6150

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: compiz 1:0.9.11+14.04.20140423-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-27.50-generic 3.13.11
Uname: Linux 3.13.0-27-generic x86_64
NonfreeKernelModules: nvidia
.proc.driver.nvidia.gpus.0: Error: [Errno 21] É um diretório: '/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 304.121 Tue Mar 4 19:47:43 PST 2014
 GCC version: gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)
.tmp.unity.support.test.0:

ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,staticswitcher,workarounds,scale,expo,ezoom,dbus]
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Wed Jun 4 00:08:13 2014
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
DkmsStatus:
 nvidia, 304.121, 3.13.0-27-generic, x86_64: installed
 nvidia-304, 304.121, 3.13.0-27-generic, x86_64: installed
 virtualbox, 4.3.10, 3.13.0-24-generic, x86_64: installed
 virtualbox, 4.3.10, 3.13.0-27-generic, x86_64: installed
GraphicsCard:
 NVIDIA Corporation C51 [GeForce Go 6150] [10de:0244] (rev a2) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Presario V3242AU [103c:30b5]
InstallationDate: Installed on 2014-04-18 (46 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
Lsusb:
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 002 Device 002: ID 045e:0745 Microsoft Corp. Nano Transceiver v1.0 for Bluetooth
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: Hewlett-Packard HP Pavilion dv2000 (RP408UA#ABA)
PackageArchitecture: all
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-27-generic root=UUID=ea0af32d-74ef-4235-8f5f-267f7a34384e ro quiet splash nomodeset video=uvesafb:mode_option=1280x800-24,mtrr=3,scroll=ywrap
SourcePackage: compiz
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/21/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.3D
dmi.board.name: 30B5
dmi.board.vendor: Wistron
dmi.board.version: 62.63
dmi.chassis.type: 10
dmi.chassis.vendor: Wistron
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnHewlett-Packard:bvrF.3D:bd04/21/2009:svnHewlett-Packard:pnHPPaviliondv2000(RP408UA#ABA):pvrF.3D:rvnWistron:rn30B5:rvr62.63:cvnWistron:ct10:cvrN/A:
dmi.product.name: HP Pavilion dv2000 (RP408UA#ABA)
dmi.product.version: F.3D
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.11+14.04.20140423-0ubuntu1
version.ia32-libs: ia32-libs 20090808ubuntu36
version.libdrm2: libdrm2 2.4.54+git20140523.8fc62ca8-0ubuntu0ricotz~trusty
version.libgl1-mesa-dri: libgl1-mesa-dri 10.3.0~git20140530.ebf229a4-0ubuntu0ricotz~trusty
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.3.0~git20140530.ebf229a4-0ubuntu0ricotz~trusty
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
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 1:7.3.99+git20140523.851b2cf8-0ubuntu0ricotz~trusty
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.911+git20140523.417997f3-0ubuntu0ricotz~trusty
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10+git20140220.480f0998-0ubuntu0sarvatt
xserver.bootTime: Tue Jun 3 20:15:47 2014
xserver.configfile: /etc/X11/xorg.conf
xserver.errors:

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

xserver.version: 2:1.15.1-0ubuntu2