I set the screen switch to 'never' and it shuts off in 10 mins.

[Farrell Swain]

In the system settings 'Brightnes and Lock' I have the screen swith set to 'never' and the screen shuts off at 10 minutes. I don't know how to fix the problem. Before I could set it to an 'hour' then back to 'never' and re-boot and the screen wouldn't switch off after 10 minutes. Now that doesn't work. I set the switch to 'never' re-boot and still the screen switches off after 10 minutes.
How do I fix the problem?

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: xorg 1:7.7+1ubuntu4
ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
Uname: Linux 3.5.0-17-generic i686
.tmp.unity.support.test.0:

ApportVersion: 2.6.1-0ubuntu6
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,decor,imgpng,compiztoolbox,resize,place,move,regex,snap,session,unitymtgrabhandles,animation,mousepoll,expo,grid,gnomecompat,vpswitch,workarounds,wall,ezoom,fade,scale,unityshell]
CompositorRunning: compiz
Date: Thu Nov 1 15:57:35 2012
DistUpgraded: Fresh install
DistroCodename: quantal
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 Advanced Micro Devices [AMD] nee ATI RV710 [Mobility Radeon HD 4500/5100 Series] [1002:9553] (prog-if 00 [VGA controller])
   Subsystem: CLEVO/KAPOK Computer Device [1558:0770]
InstallationDate: Installed on 2012-10-28 (4 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release i386 (20121017.2)
MachineType: System76, Inc. Pangolin Performance
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-17-generic root=UUID=be7121e6-77b1-45fa-8d21-bd3db139ecb7 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/18/2010
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: CALPELLACRB.86C.0000.X.0000000000
dmi.board.asset.tag: Tag 12345
dmi.board.name: W76x/M77xCUH
dmi.board.vendor: CLEVO
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: CLEVO
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrCALPELLACRB.86C.0000.X.0000000000:bd03/18/2010:svnSystem76,Inc.:pnPangolinPerformance:pvrpanp7:rvnCLEVO:rnW76x/M77xCUH:rvrNotApplicable:cvnCLEVO:ct9:cvrN/A:
dmi.product.name: Pangolin Performance
dmi.product.version: panp7
dmi.sys.vendor: System76, Inc.
version.compiz: compiz 1:0.9.8.4-0ubuntu3
version.libdrm2: libdrm2 2.4.39-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120913.8637f772-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.9-0ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu3