Hi,
I was playing this days to find few solution for my wifi card. Problem is that we have so many solution online, that is hard to say which one will work for us. My idea is that you have more then one problem.
1. It's two side problem, because of way some tools were coded, all system settings must be perfect before they will work (this is where we come to basic and pro linux users)
2. Kernel 3.8 is not that good for all ralink cards, some support was removed from this kernel version but i can't say what was removed
3. People don't try to install backports (old compact drivers) and to add aircrack patch.
What i have done to resolve all issues is 3.10 kernel, backports last version, install patch provided by aircrack team. Writing "how to" is possible but not that easy to do. Why? Every system have own settings and it's hard that my solution will work with other systems and because of that i prefer to give basic information and see people resolving this issue like a pro.
And, in the end, if we want to hack we need hardware for it and we need to know how that hardware actually works.