I could not run the android application never on my laptop. Eclipse gives same error constantly, that is \"ADB server didn\'t ack\"
When I manage to start adb server
Faced the Same Issue, doing the below steps it worked fine
sudo cp /home/username/Android/Sdk/platform-tools/adb /usr/bin/adb
sudo chmod +x /usr/bin/adb
that's it after this your adb will work fine