First of all thank you to all of people participating to elementary Os development.
In order to stop switching to Windows partition to play advanced 3D games I am trying to enable the graphic card proprietary drivers on the elementary OS Freya of my HP Pavilion dv7 laptop.
Here are the hardware full spec : http://support.hp.com/us-en/product/HP-Pavilion-dv7-4100-Entertainment-Notebook-PC-series/4247665/document/c02643026/ There is two graphic card in this model, an Intel and a ATI Mobility Radeon HD 5650.
Whatever AMD drivers I tried (the one proposed by elementary OS Additional Drivers, compiled from AMD drivers sources, from ppa:ubuntu-x-swat/x-updates (stable) orppa:xorg-edgers/ppa (beta)) , everything seems fine during the installation but it always crash after a reboot during the elementary OS splash screen with the following error :
[ 63.350772] Corrupted low memory at ffff880000006598 (6598 phys) = 3c0000000000 [ 63.350864] Memory corruption detected in low memory
This happen even after a fresh install of elementary OS.
To successfully boot after that I need to enter in recovery mode and type "apt-get purge fglrx*".
Who succeed to install AMD proprietary driver with same king of hardware and moreover "how"?