trouble with free driver on AMD Radeon HD 7570M

[Kalsan]

This is the same bug as https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1173217 but this time I succeeded sending the bug report with no fglrx drivers.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: xorg 1:7.7+1ubuntu4
ProcVersionSignature: Ubuntu 3.8.0-19.30-generic 3.8.8
Uname: Linux 3.8.0-19-generic x86_64
.tmp.unity.support.test.1:

ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Fri May 3 17:03:24 2013
DistUpgraded: Fresh install
DistroCodename: raring
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 Advanced Micro Devices [AMD] nee ATI Thames [Radeon 7550M/7570M/7650M] [1002:6841] (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Device [103c:17a9]
InstallationDate: Installed on 2013-04-26 (6 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MachineType: Hewlett-Packard HP EliteBook 8570p
MarkForUpload: True
ProcEnviron:
 LANGUAGE=de_CH:de
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_CH.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-19-generic root=UUID=a58c60f0-e44f-4679-931c-56760466062d ro recovery nomodeset
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/05/2012
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68ICF Ver. F.32
dmi.board.name: 17A7
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 42.32
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68ICFVer.F.32:bd12/05/2012:svnHewlett-Packard:pnHPEliteBook8570p:pvrA1029D1103:rvnHewlett-Packard:rn17A7:rvrKBCVersion42.32:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP EliteBook 8570p
dmi.product.version: A1029D1103
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.9~daily13.04.18.1~13.04-0ubuntu1
version.ia32-libs: ia32-libs 20090808ubuntu36
version.libdrm2: libdrm2 2.4.43-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.1-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.1-0ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.6-0ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.7-0ubuntu1
xserver.bootTime: Fri May 3 17:02:41 2013
xserver.configfile: /etc/X11/xorg.conf
xserver.errors:
 open /dev/fb0: No such file or directory
 Screen 0 deleted because of no matching config section.
 Screen 0 deleted because of no matching config section.
 Screen 0 deleted because of no matching config section.
 Screen 0 deleted because of no matching config section.
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.3-0ubuntu6