Screens are turned off immediately after inactivity

[ph0nph0n]

I went in system settings > screen, and set "turn off after" to "never". However, rather than never being turned off, the screen is turned off as soon as I stop any activity.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: xorg 1:7.6+7ubuntu7
ProcVersionSignature: Ubuntu 3.0.0-12.19-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
NonfreeKernelModules: fglrx
.tmp.unity.support.test.0:

ApportVersion: 1.23-0ubuntu2
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,gnomecompat,grid,imgpng,move,regex,resize,snap,vpswitch,mousepoll,place,wall,session,animation,unitymtgrabhandles,workarounds,fade,expo,ezoom,scale,unityshell]
CompositorRunning: compiz
Date: Sun Oct 2 20:20:40 2011
DistUpgraded: Log time: 2011-09-28 22:29:29.789371
DistroCodename: oneiric
DistroVariant: ubuntu
DkmsStatus: fglrx, 8.881, 3.0.0-12-generic, x86_64: installed
ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu
GraphicsCard:
 ATI Technologies Inc Radeon HD 5870 (Cypress) [1002:6898] (prog-if 00 [VGA controller])
   Subsystem: ATI Technologies Inc Device [1002:0b00]
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110920.5)
JockeyStatus:
 xorg:fglrx_updates - ATI/AMD proprietary FGLRX graphics driver (post-release updates) (Proprietary, Disabled, Not in use)
 xorg:fglrx - ATI/AMD proprietary FGLRX graphics driver (Proprietary, Enabled, In use)
MachineType: MICRO-STAR INTERNATIONAL CO.,LTD MS-7583
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=2ceed894-95ab-4cca-9367-185e77f40dbd ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to oneiric on 2011-09-28 (3 days ago)
dmi.bios.date: 01/26/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V1.7
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P55-GD65 (MS-7583)
dmi.board.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
dmi.board.version: 1.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV1.7:bd01/26/2010:svnMICRO-STARINTERNATIONALCO.,LTD:pnMS-7583:pvr1.0:rvnMICRO-STARINTERNATIONALCO.,LTD:rnP55-GD65(MS-7583):rvr1.0:cvnMICRO-STARINTERNATIONALCO.,LTD:ct3:cvr1.0:
dmi.product.name: MS-7583
dmi.product.version: 1.0
dmi.sys.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu1
version.fglrx-installer: fglrx-installer N/A
version.ia32-libs: ia32-libs 20090808ubuntu25
version.libdrm2: libdrm2 2.4.26-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1