fglrx (not installed): fglrx kernel module failed to build

[Mariano]

I'm installing ati driver for HD 3100 radeon card

ProblemType: Package
DistroRelease: Ubuntu 12.10
Package: fglrx 2:8.970-0ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-21.32-generic 3.5.7.1
Uname: Linux 3.5.0-21-generic i686
.tmp.unity.support.test.0:

ApportVersion: 2.6.1-0ubuntu9
Architecture: i386
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
DKMSKernelVersion: 3.5.0-21-generic
Date: Sat Jan 5 21:09:17 2013
DistUpgraded: Fresh install
DistroCodename: quantal
DistroVariant: ubuntu
DkmsStatus: fglrx, 8.970: added
GraphicsCard:
 Advanced Micro Devices [AMD] nee ATI RS780C [Radeon HD 3100] [1002:9611] (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Device [103c:3029]
InstallationDate: Installed on 2013-01-05 (0 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release i386 (20121017.2)
MachineType: Hewlett-Packard HP Compaq dc5850 Small Form Factor
MarkForUpload: True
PackageVersion: (not installed)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-21-generic root=UUID=d6301938-16c8-4606-8a21-3cdce26ebe34 ro quiet splash vt.handoff=7
SourcePackage: fglrx-installer
Title: fglrx (not installed): fglrx kernel module failed to build
UnitySupportTest:
 Error: command ['/usr/lib/nux/unity_support_test', '-p', '-f'] failed with exit code 1: X Error of failed request: BadAlloc (insufficient resources for operation)
   Major opcode of failed request: 154 (GLX)
   Minor opcode of failed request: 3 (X_GLXCreateContext)
   Serial number of failed request: 25
   Current serial number in output stream: 26
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/09/2008
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 786F6 v01.09
dmi.board.name: 3029h
dmi.board.vendor: Hewlett-Packard
dmi.chassis.asset.tag: CZC8389MD1
dmi.chassis.type: 4
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr786F6v01.09:bd04/09/2008:svnHewlett-Packard:pnHPCompaqdc5850SmallFormFactor:pvr:rvnHewlett-Packard:rn3029h:rvr:cvnHewlett-Packard:ct4:cvr:
dmi.product.name: HP Compaq dc5850 Small Form Factor
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.8.6-0ubuntu1
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 2:1.13.0-0ubuntu6.1
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