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Review of Linux Compatibility
The WMP54G PCI WiFi card from Linksys (Cisco) exists in at least two different versions. The version V2 has the PCI-ID 14e4:432b:
Broadcom Corporation BCM4322 802.11a/b/g/n Wireless LAN Controller [14e4:432b]
The network card is fully supported under Linux, however it needs the installation of firmware file. Without the firmware file the following error message will be cast by the kernel:
b43-phy0 ERROR: Firmware file "b43/ucode15.fw" not found b43-phy0 ERROR: Firmware file "b43-open/ucode15.fw" not found b43-phy0 ERROR: You must go to http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware and download the correct firmware for this driver version. Please carefully read all instructions on this website. b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23) b43-phy0: Radio hardware status changed to DISABLED
The firmware file can be installed under by the tool “Additional driver”: “System > Administration > Additional Drivers”, in which the Broadcom driver needs to be activated.
A detailed intallation instruction can be found at http://askubuntu.com/questions/55868/how-to-install-broadcom-wireless-drivers-bcm43xx.