I had a similar issue, when I was building an app, I could select the device in Logcat, but not the process. (same message, “No Debuggable Processes”) The reason: I was building my app in release, then, when I changed the build variants to debug, I was able to select the process.
My devices stopped working as Chrome de-activated the now depracated ADB plugin as it’s built in dev-tools now. I downloaded the SDK and followed the instructions at Chrome Developers. How ever I found the instructions served by Alphonso out not to be sufficient and I did it this way on Windows 8: Download Android SDK … Read more
I also encuntered the same in S4. I’ve tested the app in Galaxy Grand , HTC , Sony Experia but got only in s4. You can ignore it as its not related to your app.