Android emulator screen fills up only some fraction part of actual android emulator screen

Question

First thing first,

Using Android Studio 2.3.3

Problem:

My emulator screen is covering the only partial amount o

Answer 1

I am running Archlinux and I had exactly the same problem because I have $QT_SCALE_FACTOR set to 2 by default. Setting it back to 1 for the emulator fixed the problem:

env QT_SCALE_FACTOR=1 Android/Sdk/emulator/emulator -avd api25