hi whats up

i have a laptop and the wireless card is ipw 2200 b/g and the o.s is knoppix 4.0.2

the problem is that i cant put my wireless card in monitor mode

the error outpot is :
Code:
Error for wireless request "Set Mode" (8B06) :
    SET failed on device eth2 ; Invalid argument.
what can i do to solve this problem???

tnx