12.04 - problem in installing amd driver radeon hd 5460

I tried to install my gpu in Ubuntu 12.04 with this link

What is the correct way to install proprietary ATI Catalyst Video Drivers (fglrx) directly from AMD?

but when I type this command line:

$sudo aticonfig --initial

I got this err:

aticonfig: No supported adapters detected

what should I must to do?
any suggestion about this?

I use Ubuntu 12.04 and hp pavilion dm4-1060ea note book and ati radeon hd5460

I used this command to find out the model of my gpu card:

$lspci | grep VGA

and showed me these:

00:02.0 VGA compatible controller: Intel Corporation Core Processor
Integrated Graphics Controller (rev 02)

01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee
ATI Manhattan [Mobility Radeon HD 5400 Series]

Thanks

Hamid