Public bug reported:

I'm trying to use a AMD RADEON HD 6450 video card, but it fails to show a login 
screen, see screen photo attached.
I've tried different kernel (2.6.38-8, 2.6.38-10, 2.6.39-3) and driver versions 
(from main repository and from xorg-edgers ppa), no success.
The fglrx drivers makes a SegFault on my system. I tried to use vesa and 
removed packages, related to radeon, but it still does not show the login 
screen correctly, see the same screen photo.

The logs and info attached automatically are from the situation where a
vesa driver expected to be used.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xserver-xorg-video-radeon (not installed)
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7
Uname: Linux 2.6.38-10-generic x86_64
Architecture: amd64
CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
Date: Sun Jul  3 23:01:07 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
GraphicsCard:
 ATI Technologies Inc NI Caicos [AMD RADEON HD 6450] [1002:6779] (prog-if 00 
[VGA controller])
   Subsystem: ASUSTeK Computer Inc. Device [1043:03dc]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
ProcEnviron:
 LANG=ru_RU.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-2.6.38-10-generic 
root=UUID=ca260b9b-380b-4b09-9c78-54901c6bb687 ro quiet splash vt.handoff=7
Renderer: Unknown
SourcePackage: xserver-xorg-video-ati
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/15/2011
dmi.bios.vendor: Intel Corp.
dmi.bios.version: BLH6710H.86A.0110.2011.0415.1506
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: DH67BL
dmi.board.vendor: Intel Corporation
dmi.board.version: AAG10189-205
dmi.chassis.type: 3
dmi.modalias: 
dmi:bvnIntelCorp.:bvrBLH6710H.86A.0110.2011.0415.1506:bd04/15/2011:svn:pn:pvr:rvnIntelCorporation:rnDH67BL:rvrAAG10189-205:cvn:ct3:cvr:
version.compiz: compiz 1:0.9.4+bzr20110606-0ubuntu1~natty1
version.ia32-libs: ia32-libs 20090808ubuntu13
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 
1:0.0.16+git20110107+b795ca6e-0ubuntu7

** Affects: xserver-xorg-video-ati (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug natty ubuntu

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https://bugs.launchpad.net/bugs/805211

Title:
  AMD RADEON HD 6450 random pixels on display

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