I do not understand why it is so difficult to fix this bug. There is not
mysterious feature in the new kernel that prevents the WiFi to work.

The root cause is a minor syntactically issue in the source:
1) structure / content of the kernel header files changed
2) this makes the re-compilation of the WiFi driver fail with every new kernel 
(I doubt the next release candidate will be different)
3) since the compilation fails -> there is after the kernel update simply no 
Ralink driver included in the kernel (no mystery !)
I explaind under 
https://answers.launchpad.net/ubuntu-certification/+question/238136 how you can 
compile the Ralink driver under .55 und .56. The workaround described is of 
course not a permanent solution. However, by changing the source code of the 
driver module you can fix the issue within minutes.

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https://bugs.launchpad.net/bugs/1243693

Title:
  RT3290 12.04 new kernel

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