Yes, it's very simple, short the pins A1 and B17 with a piece of very thin wire so that it can get in, you can reuse it from some piece of old computer-related equipment or electronics.
If it doesn't work after that post more info (driver versions, OS, BIOS ver, etc.)
So basically i need to short short pin every x1 slot, right ?
By the way, BIOS at 19.9, ubuntu 12.04 and Catalyst 13.3
Thanks for trying to help :-)