Until now I was using pytorch 0.3.1 on Linux with a GPU and CUDA 9.1. Everything works great.
I just installed pytorch 0.4 in a new conda env on the same machine, but now torch.cuda.is_available() returns False. When I go back to the pytorch 0.3.1 env, it returns True. I also installed pytorch 0.3.1 in a third env, and I get False again.
Any pointers?