I am trying to run an app from Android Studio on my Ubuntu laptop.
I have enabled USB debugging, but it is still not working.
When I press run
I solved with this: https://stackoverflow.com/a/37109216/5081063
If the problem is only on Android Studio and not in your OS you can solve with that.
So first check if adb recognize any devices with:
$ adb devices
If yes, open Android Studio and follow these steps: