I just installed Android Studio (v1.4) on Ubuntu 15.04 (64) and am unable to connect to my Moto G (Android 5.0.2) to run the application I made from a tutorial.
i already found the solution to this. in order to solve this one, is go to Gradle > Build.gradle(module:app) > and then change the minSdkVersion that is compatible with your phone. Hope this help! :)