linux not recognizing 2nd 6870

[trilogy456]

I can get Xubuntu 11.04 to mine with 1 6870, but I can't see the 2nd 6870.  I've tried aticonfig --initial --adapter=all command to no avail.  "lspci -v" doesn't even show the second card.

I know the second card works because I swapped the cards in a solo setup and both work.

Xorg.conf doesn't show the second card; even manually adding it to xorg.conf doesn't make it show up.  I'm plugging them both into pcie 16x slots, but not sure why lspci never shows the 2nd card.

Any help?  Thank you.