Can't launch the AVD on the Android Studio 2.3

Question

I'm using Android Studio 2.3.1 on my Ubuntu17 system and I'm newbie in Android developement.
So when I wanted to test my first code on the AVD I got this screen:

So when I choose the Nexus Virtual Device nothing happens and this is what i got:

Nothing happens and I see always the message:

Waiting for target device to come online.

And aftre a while I got this message:

Error while waiting for device: Timed out after 300seconds waiting for emulator to come online.

Of course I enabled ADB Integration.

Please any help for this problem

Answer 1

I highly suggest that don't use AS AVD instead install Genymotion its free in your File > Settings > Plugins then search for Genymotion and install. But sometimes Virtual Device is not accurate in your phones DPI. Then you should build or test your application using a real device :)