second 1070 not seen (linux)

[bastibasti]

Hi guys,

I've installed the second 1070 today via pciex16 (full) riser.

The cards are not connected via SLI. However the system doesnt recognize the second card.

Any idea - since you guys handle multiple gpus regularily? Some Mobo setting necessary? (The board is a P5B-deluxe)

Code:

==============NVSMI LOG==============

Timestamp                           : Wed Sep 14 08:55:15 2016
Driver Version                      : 370.28

Attached GPUs                       : 1