I have a HP DV7 with a HD 5470 512M card. Installation of the Catalyst 11.10 is repeatedly failing on a fresh install of Ubuntu 11.10. Catalyst 11.8 proprietary drivers were working well with Ubuntu 11.04. I have tried installing directly from the .run and generating the distribution specific packages. Nothing has worked. After installation which goes through successfully, the system hangs on reboot after the flashing dots. I have to replace the /etc/X11/xorg.conf to get the X working.
I have followed instructions as per the http://wiki.cchtml.com/index.php/Main_Page wiki.
Request for support to ATI/AMD gives the response that this model is unsupported on Linux by HP :).
Updated 14-Nov I have reverted back to the open source drivers which work well enough for me.