I have an RPI Model 2B running Raspbian that works (almost) perfectly.
I recently bought a TP-LINK WN725N V2.0 that I thought would work if I followed the instructions listed here. However, when I use the lsusb
command, I don't see the WiFi dongle listed. I though it could be because I booted the RPI with the WiFi dongle attached, so I booted it without the dongle, and then attached it when it was booted. The rainbow thing in the top right corner appears, and the RPI freezes. I try typing, but the text lags about 10 minutes behind my key strokes. After what seems like an eternity of waiting, the RPI finally becomes responsive, but I still don't see the dongle when I type in the lsusb
command.
Could this be an issue with the RPI or the dongle? Is the RPI not receiving enough power? If that's the case can you please recommend a cheap but reliable power supply I can purchase?
I should probably mention (not sure if this is important) that connecting to the internet via ethernet works perfectly.