I was recently able to a RALink dual band usb wifi adaptor working in Ubuntu with the help of this thread and Mark Greaves’ very neat solution:
The problem is that Ubuntu is on my desktop pc, and openSUSE and windows are on my laptop.
With the Ubuntu desktop, I got (by my experience) amazingly fast large file transfer speeds over the network at 20 MB/s. I’m really hoping I can get something comparable on the laptop.
When I tried the method described in the link on openSUSE, I got hardware and connectivity on the 5.8 GHz band and got IP very quickly, but i could barely get ping, even to the router, and I managed to get a webpage to load after 20 minutes of playing around with it. Depending on which kernel I booted with (desktop or default), I got system freezes after opening firefox. Desktop kernel seemed more susceptible to this.
After getting some advice, I tried the new RALink driver at :
and installed after editing the config.mk file appropriately.
This time I got a nifty new feature, as the LED light came on, and network manger reported good connectivity, but still no good TCP connectivity. I couldn’t ping at all.
I tired the manufacturer’s drivers with Windows 7 on the same laptop (incidentally, the same cd came with Linux drivers, and a readme that said the makefiles have to be configured manually, but no advice on how to do so.) I got impressive connectivity, although not as impressive as in Ubuntu: 9 MB/s+ with large file transfers over the network. Still, I’ll take that any day over the built-in Realtek adaptor.
I found a package in Packman (openSUSE) called rt5572sta, but installing this rpm didn’t appear to do anything , as none of the modinfo info had changed.
I would appreciate any help I could get in making this adaptor work. Thanks!
System info: Ubuntu 12.4 x86_64 3.2.0-38 generic on desktop, openSUSE 12.2 x86_64 latest kernel and Win8 on laptop