I have a LG A-410 lap-top (64 bits) with rt 3090 wireless card. Searching the problem I discover that I already have a rt 3090-dkms installed, but my wireless doesn't work.
*-network UNCLAIMED
description: Network controller
product: RT3090 Wireless 802.11n 1T/1R PCIe
vendor: RaLink
physical id: 0
bus info: pci@0000:02:00.0
version: 00
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: latency=0
resources: memory:e5400000-e540ffff