Comment 10 for bug 1248917

Ubuntu shipped kernel:
Linux version 3.11.0-15-generic

lsusb:
Bus 002 Device 003: ID 1286:2043 Marvell Semiconductor, Inc.

kernel dmesg:
[ 2.762855] usb 2-2: new high-speed USB device number 3 using xhci_hcd
[ 2.781386] usb 2-2: New USB device found, idVendor=1286, idProduct=2043
[ 2.781390] usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2.781392] usb 2-2: Product: Marvell Wireless Device
[ 2.781393] usb 2-2: Manufacturer: Marvell
[ 2.781394] usb 2-2: SerialNumber: 0000000000000000
(and nothing more)

Note that kernel does never report "WLAN FW is active". Thus it is a mwifiex firmware problem.