Disabling Ubuntu menu proxy when not using Unity

Does seeing messages like this on your terminal annoy you?

** (gvim:8016): WARNING **: Unable to create Ubuntu Menu Proxy: Timeout was reached

It sure does annoy me.  Turns out, it’s because the app you’re running is trying to connect its menus to Unity’s “global menu” (or whatever that’s called).  The way to fix this problem would be to disable Unity menu proxy when you’re not using Unity.  Add this to your shell’s startup script (.bashrc, .zshrc, etc):

if [[ $DESKTOP_SESSION != "ubuntu" && $DESKTOP_SESSION != "ubuntu-2d" ]]
then
  export UBUNTU_MENUPROXY=0
fi