The status bar shows `No GPU` even though the GPU can be accessed by `nvidia-smi` which is available at `/usr/bin` included in `$PATH`. <img width="1280" alt="Screen Shot" src="https://user-images.githubusercontent.com/5422228/84184841-aefa7300-aaab-11ea-9124-7a17394f9c3d.png"> I am using tmux v2.6