How to download and emulate the official android x86 image from Android Studio? Android studio downloads x86 images from google and emulate them so I can test my apps. I tried downloading and unzipping the thing it downloads but it doesn't look like an image that can be run with virt-manager. 

Which images are downloaded by Android Studio and how can I emulate them in Ubuntu?
If I understand correctly what you want achieve, this has been documented pretty well on SE sister sites:

Firstly assuming you have successfully installed Android studio, it needs the following files to successfully run an AVD:


sdk tools
build tools
platform tools
system-images
sources etc


(You may download these separately as zipped files, but make sure to extract in the correct directory)



In case you haven't got Android studio (or standalone sdk manager) up and running, you may need to get started by following these posts on sister sites:


Stackoverflow: How to install Android SDK on Ubuntu?
AskUbuntu: Complete Installation Guide for Android SDK / ADT Bundle on Ubuntu


Unlike on Windows, you can simply access avd manager using command-line i.e open terminal ( CTRL + ALT + T) and type android avd to open the Android Virtual Device Manager.
Configure your virtual device to suit your needs, click start and from here you can launch your AVD