title: "MisconfigurationError: No TPU devices were found" even when TPU is connected in PyTorch Lightning
body: <p>Have been frustrated over the past few hours over a problem, though It's likely its a problem I started myself hah.</p>
  <p>I'm trying to connect to the TPU in Colab. I'm pretty sure I've gotten all the import stuff down. My code is <a href="https://colab.research.google.com/drive/1EaCJpyYK8xLuzO79ESAsIlGZAcWjOh8u?usp=sharing" rel="nofollow noreferrer">here.</a> I'm not completely set on everything, so the entire document isn't functional, but you should be able to see my attempts at TPU connection.</p>
  <p>I'm running Pytorch in version 1.5.0 and torchvision in 0.6.0 because I was finding I couldn't install XLA with anything later than 1.5.0. I'm running XLA in version 20200325.</p>
  <p>This is the image that seems so confusing: It states that we have a connection with xla: 1 yet when trying to flag it in the trainer I get an error saying no TPUs can be found.</p>
  <p><a href="https://i.stack.imgur.com/6TfHO.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/6TfHO.png" alt="enter image description here" /></a></p>
  <p>If anyone could help me, that would be amazing.</p>
  <p>Thanks,
  A</p>