I have been having problems with N mode. When I execute iwconfig get
wlan0 IEEE 802.11b/g
and when I boot in Mac os my wireless card info is :
Firmware Version: Broadcom BCM43xx 1.0 22.214.171.124.5)
Supported PHY Modes: 802.11 a/b/g/n
And I am able to connect to N mode wireless network. But on ubuntu, this has been a problem for me when trying to connect to access point with phy mode N. After some research I found on the linux wireless documentation that
802.11a/n (5GHz) modes and power management are not yet supported HT phy cards (4331)
Is there a way to get it to work?