Need help with Scrypt mining rig!! 7950 cards

[Kenshin]

Hi, I used to only have 2 cards in my MSI Z77A GD65.

But now I got 6 cards, and I am running into trouble. I am using 2 x AX860i power supply. No power riser (I have order some on the way), just normal riser.

I am also running xubuntu. Whenever I do.

Code:

sudo aticonfig --lsa
sudo aticonfig --adapter=all --initial

I can see that my 6 cards are listed.

Then I reboot the rig and run cgminer. The cgminer only sees 2 cards and sometime 3 cards. But never 6 cards.

What did I do wrong? Do I need power riser? Is that why?

Thank for your help.

[Kenshin]

BUMP

[fury420]

This thread may help? https://bitcointalk.org/index.php?topic=97154.0

not the exact same board, but very similar, I suspect you'll need to do the pin shorting thing to get more than 5 working