Emulate and Build Hangs

after system restart, emulate will work.

but if we emulate again (with emulator open or closed) it will hang.
what to do?

this happens:

$ionic emulate android
Running command: /home/myAccount/Workspace/Ionic/ionicevent/hooks/after_prepare/010_add_platform_class.js /home/myAccount/Workspace/Ionic/ionicevent
add to body class: platform-android
Running command: /home/myAccount/Ionic/ionicevent/platforms/android/cordova/run --emulator
ANDROID_HOME=/home/myAccount/android-sdk-linux
JAVA_HOME=/usr/lib/jvm/java-7-oracle

throw e;
^
Error executing “adb devices”: error: protocol fault (no status)

Error: /home/myAccount/Workspace/Ionic/ionicevent/platforms/android/cordova/run: Command failed with exit code 1
at ChildProcess.whenDone (/usr/local/lib/node_modules/cordova/node_modules/cordova-lib/src/cordova/superspawn.js:139:23)
at ChildProcess.emit (events.js:110:17)
at maybeClose (child_process.js:1015:16)
at Process.ChildProcess._handle.onexit (child_process.js:1087:5)

also ionic build android hangs.

facing the same problem.

Any fixes ?

Did you resolve this @estonilo ??

Regards