Adb Android Devices List Randomly Empty

I am developping an android application and I am having trouble getting adb to work reliably. Every now and then, my device (Samsung Galaxy S6) does not show in adb devices list an

Solution 1:

I just found out the problem was related to Chromium device inspector (chrome://inspect/#devices). Just closing the tab and reopening it did the trick. I'm using Chromium 45.0.2454.101. It was really driving me crazy ! Hopefully it spares someone else the trouble :)

Solution 2:

I see you found your solution, but for other's where this continues I had the same problem, until I simply 1. ran

adb wait-for-device

2. reconnected the device via usb
3. changed "Use USB for" "File Transfers"