I am trying to set my wireless card into monitor mode. I am working with:

description: Wireless interface

product: BCM4312 802.11b/g LP-PHY

vendor: Broadcom Corporation

logical name: eth2

When I try to set it to monitor mode I get:

sudo iwconfig eth2 mode monitor

Error for wireless request "Set Mode" (8B06) :

    SET failed on device eth2 ; Invalid argument.

I also tried using:

$ sudo airmon-ng start eth2





Found 5 processes that could cause trouble.

If airodump-ng, aireplay-ng or airtun-ng stops working after

a short period of time, you may want to kill (some of) them!



PID    Name

1094    NetworkManager

1096    avahi-daemon

1097    avahi-daemon

1167    wpa_supplicant

1720    dhclient

Process with PID 1720 (dhclient) is running on interface eth2





Interface    Chipset        Driver



eth2        Unknown         wl (monitor mode enabled)



$ sudo iwconfig

lo        no wireless extensions.



eth0      no wireless extensions.



eth2      IEEE 802.11bg  ESSID:"Redacted"  

          Mode:Managed  Frequency:2.437 GHz  

          Bit Rate=54 Mb/s   Tx-Power:24 dBm  

          Retry min limit:7   RTS thr:off   Fragment thr:off

          Power Management:off

          Link Quality=4/5  Signal level=-59 dBm  Noise level=-57 dBm

          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0

          Tx excessive retries:24  Invalid misc:0   Missed beacon:0

I've gone through various driver tutorials, but nothing is helping. Anyone know how to get this working for this specific wireless card?