I installed Android Studio (intelliJ) and if I run it, in Android DDMS's Devices list is not empty. There is an unknown device, name 'Emulator unknown Android 2.3.4 (API 10)'. If I use AVD and run my emulator, there will be two emulator in this list.
It's very annoying, because when I run an android project, accidentally select this unknown device, and it's mean my app run in nowhere. There is no GUI for this unknown, and it infinitely spam the logcat. So I want stop and delete it.
I cannot find solution in the web (but probably I used wrong keywords).
Finally I figured out what was the problem. Long time ago I installed an android emulator BlueStacks. Currently it's not working because it was much faster then Goggle version and Google sue them. But somehow the Android Studio recognize it as an incomplete but running emulator. I guess, I have to uninstall BlueStacks.