I was working on my project using my own device ( LG Optimus G E975 , android 4.4.2) on ubuntu 12.04, and everything was going fine, eclipse could detect the device and I could easily debug on device. Suddenly the debugging icon in status bar was gone and the only thing it now shows is the charging icon, the usb debugging is turned on in developer options. when I connect my phone to laptop and using
adb devices
it doesn't find any device. I've tried pluging the device to laptop many times and still the same. what could possibly go wrong??
It happens some times when we frequently use the real device for debugging purpose, it's not your devices problem, it is because of USB chord, try using a different USB chord, it will start work again.