Emulator Does Not Close Ubuntu

Has anyone else noticed this in ubuntu (or possible any other linux env开发者_如何学运维ironment)? Clicking the X does not close the emulator. I have to manually use the system monitor to kill the process everytime I use it.

You may wish to use Genymotion instead of the included emulator, as it is significantly faster, and in all likelihood more stable.

Other than that, I agree with the previous user that it would be worthwhile to try removing the virtual device and creating a new virtual device with 1.5 GB of memory.