I have the same problem on an HP envy 6-1160ez. The Ralink-Device for
WLAN does not work.

I fear this bug will become more and more painful for ubuntu 12.10 since
HP is using Ralink 3290 in many laptops.

I am quite disappointed by ubuntu because Fedora 18 supports the Raling WLAN 
out-of-the-box. The proposed workaround to upgrade to kernel 3.6.x seems to 
work but there have been reported some bugs (bad performance) as side-effect. I 
would expect that ubuntu comes out with a new "official" kernel for ubuntu 
12.10 that fixes this bug as soon as possible.
I propose to raise the importance of this bug from "medium" to "high".   


Here some more details of my system:

uname -a
Linux xxx 3.5.0-22-generic #34-Ubuntu SMP Tue Jan 8 21:47:00 UTC 2013 x86_64 
x86_64 x86_64 GNU/Linux

sudo lshw -class network
...
  *-network UNCLAIMED
       description: Network controller
       product: Ralink corp.
       vendor: Ralink corp.
       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:c0510000-c051ffff
...


lspci -nn
...
02:00.0 Network controller [0280]: Ralink corp. Device [1814:3290]
02:00.1 Bluetooth [0d11]: Ralink corp. Device [1814:3298]
...

I tried to update all drivers but still Ralink Wireless does not work.

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https://bugs.launchpad.net/bugs/1049466

Title:
  Need support of Ralink RT3290 wifi support

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