This problem has just started today.
If I turn on my Stadia controller it automatically turns on my TV (which is off in standby mode) and immediately boots Stadia and is connected to my Chromecast Ultra. This would be great if I wanted to play on my TV, but this means I can't play on my phone or laptop.
I have no chance to connect the controller to my phone or laptop using the code because all I can do is turn off the controller and if I turn it on it'll be connected to the Chromecast on the TV.
Please can anyone help?
You need to hold the Stadia button a little longer when turning on the controller:
On your Stadia Controller, press and hold the Stadia button until it vibrates twice. The controller's status light will blink white.
Then you will be able to enter a new linking code.