why use 2x HD5970 sametime just one work?

[acubens]

i have 2x hd5970.
but when i use oclHashcat v0.25 in Ubuntu 10.10.
just one hd5970 work , why?

and the speed of one hd5970 in Ubuntu 10.10 is 300M(in the condition of -m 300) slower than in Win7 .

should two cards do a firecross?

thx

disable crossfire
aticonfig --adapter=all --initial
export DISPLAY=:0 (if you are on ssh)

Best
-J