Hello Anatoly,

emulator binaries in AOSP prebuilts dir are broken for quite some time. We 
are in the process of testing the fresh emulator binaries built from the 
tip of the tree emu-master-dev branch for all architectures.
The fresh prebuilts should appear on Gerrit soon, hopefully by the end of 
this week. You should occasionally check 

As a workaround, you could build the emulator binaries yourself :

Rebuild emulators from scratch

repo init -u https://android.googlesource.com/platform/manifest 
-b emu-master-dev
repo sync

# Building the emulators from scratch
cd external/qemu

# The binaries are located in external/qemu/objs

Lunching the emulator

# Setup AOSP environment variables which will help the emulator to pick up 
appropriate images from the build.
# You stick to using this terminal when running the emulator
cd <AOSP>
source build/envsetup.sh
lunch aosp_X-eng

cd <EMU_MASTER_DEV>/external/qemu
./objs/emulator -show-kernel -gpu on

Kind regards,

On Sunday, September 18, 2016 at 10:51:28 PM UTC+2, Anatoly Korniltsev 
> I've built aosp_x86-eng from master branch, when I run emulator it works 
> fine except adb devices always lists the emulator as offline.
> Does anyone know the reason/solution?
> Thanks.

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