I am running Linux Mint 18.2 (64-bit, Xfce) on a Dell Latitude D430. It runs fine, but bluetooth does not appear to be working. I can detect devices, but connecting doesn't always work, and sending files always fails. I've tried switching out my bluetooth device to a USB dongle, and even booted into Linux Mint MATE and Black Lab Linux (which uses a different USB client). The problem persists under all circumstances. I have no such problem on my other computer, running Mint Cinnamon on a Dell Studio 1737. Can anyone tell me if this is a Ubuntu driver bug, or if I am looking at a more serious hardware issue? Thanks.