package fglrx 2:8.861-0ubuntu1 failed to install/upgrade: update-alternatives: error: alternative link /usr/bin/aticonfig is already managed by i386-linux-gnu_gl_conf.

I have graphic card AMD HD6450...The driver are not installed.

Setting up fglrx (2:8.861-0ubuntu1) ...
update-alternatives: error: alternative link /usr/bin/aticonfig is already managed by i386-linux-gnu_gl_conf.
dpkg: error processing fglrx (--configure):
 subprocess installed post-installation script returned error exit status 2
dpkg: dependency problems prevent configuration of fglrx-amdcccle:
 fglrx-amdcccle depends on fglrx; however:
  Package fglrx is not configured yet.
dpkg: error processing fglrx-amdcccle (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of fglrx-dev:
 fglrx-dev depends on fglrx; however:
  Package fglrx is not configured yet.
dpkg: error processing fglrx-dev (--configure):
 dependency problems - leaving unconfigured

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: fglrx 2:8.861-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-20.32-generic-pae 3.2.12
Uname: Linux 3.2.0-20-generic-pae i686
ApportVersion: 1.95-0ubuntu1
AptOrdering:
 fglrx: Configure
 fglrx-amdcccle: Configure
 fglrx-dev: Configure
Architecture: i386
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDmesg: [ 22.144010] eth0: no IPv6 routers present
Date: Sun Mar 25 21:22:04 2012
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20120201.1)
MachineType: Gigabyte Technology Co., Ltd. G41M-Combo
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-20-generic-pae root=UUID=3ef7b15f-7c1e-4b39-b7d8-d0a4820b42e3 ro quiet splash vt.handoff=7
SourcePackage: fglrx-installer
Title: package fglrx 2:8.861-0ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/30/2011
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F4
dmi.board.name: G41M-Combo
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF4:bd05/30/2011:svnGigabyteTechnologyCo.,Ltd.:pnG41M-Combo:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnG41M-Combo:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: G41M-Combo
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz 1:0.9.7.2-0ubuntu1
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
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