Which version of the Ultra do you have? There are 6 different versions.
It does sound odd that it's reporting a WiFi connection when you're using Ethernet. My first suggestion would be to try a different Ethernet cable. Cables do fail, usually at a connection. Make sure the cable isn't designated as a crossover cable. They are pretty hard to find any more, since almost all switches will now handle the crossover internally if necessary.
The fact you've had connection issues with the TV in the other room might point to a problem with your router as well. Since the router is likely also your wired switch, if it's acting up it might be causing the problem for both devices. If the router is provided by your ISP, it might be worth asking them for a replacement.
Dan
Roku Community Streaming Expert
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