I'm a new member to stadia , and I'm having issues with the controller. While its still on , ithe buttons stop responding. The only button that works when it happens is the stadia button in the bottom center of the controller. Any suggestions?
So it happens while playing?
Are you playing on the Chromecast Ultra? If so on which wifi network are you connected with the controller? (2.4 or 5)
Things you can always try is hard resetting the controller and do a fresh setup to see if that works.
I'm using my ethernet
So you are using the Chromecast Ultra with a ehternet cable and your are able to play with the Stadia controller but it stops working while playing?
If so did you try a hard reset of the controller and setup it up on your mobile using a 2.4 GHz WiFi connection?