Comment 7 for bug 1098561

Same problem with AMD Cayman XT (HD 6970)

Kernel: Linux polluX6 3.8.0-0-generic #4-Ubuntu SMP Tue Jan 15 20:42:19 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

fglrxinfo
display: :0 screen: 0
OpenGL vendor string: Advanced Micro Devices, Inc.
OpenGL renderer string: AMD Radeon HD 6900 Series
OpenGL version string: 4.2.11986 Compatibility Profile Context

:~$ sudo apt-cache show fglrx-updates
Package: fglrx-updates
Priority: extra
Section: restricted/misc
Installed-Size: 239337
Maintainer: Ubuntu Core Developers <email address hidden>
Architecture: amd64
Source: fglrx-installer-updates
Version: 2:9.010-0ubuntu1

Cheers and Thanks in advance !

P.S.:
The AMD Cedar Chipset is used in the HD5400 Series

"Codenamed Cedar,[13] the Radeon HD 5400 series was announced on February 4, 2010, starting with the HD 5450. The Radeon HD 5450 has 80 stream cores, a core clock of 650 MHz, and 800 MHz DDR2 or DDR3 memory. The 5400 series is designed to assume a low-profile card size." - Wikipedia