I\'m using Android Studio (Beta) 0.8.7 and my logcat has been working fine for months. All of a sudden my logcat is unable to detect any app or package names. This means I c
Check in your "tools -> android" if you have the option enable ADB integration checked - that was my case, that for some reason the package name was not visible like in your case.
I think there might be some keyboard shortcut that is toggling the effect as I'm sure I did not change this myself, however manual checking the option and restarting emulation (just hit run) solved the problem.