Comment 3 for bug 139070

Hi,

I founded the trouble : rt2500usb should NOT be loaded at the same time that rt73usb : the two drivers are different.

How to fix it :
$ cd /lib/modules/`uname -r`/ubuntu/wireless/rt2x00
$ sudo mv rt2500usb.ko rt2500usb.ko_bak
$ sudo depmod -a

Then unplug your device,
remove all remaining rt* module : $ sudo rmmod rt73usb rt2x00usb rt2x00lib rt2500usb
Plug your device.
It should work.

In fact, there are bad vid:pid identifiers in rt2500, that should only be in one module. I put bellow the list of duplicate identifiers :
v148Fp2573
v050Dp705Ad
v050Dp7050d

Mine is v148Fp2573 and should only be rt73usb.