No debuggable processes in logcat when phone detected by Android studio

Solution 1:

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.

Solution 2:

You need to enable adb integration, just go to Tools-->Android-->Check Enable ADB Integration

It was a default feature a few versions ago but now it's disabled by default

Solution 3:

In my case, using Android Studio 3.1.3, I had to enable "Use libusb backend" checkbox at File-->Settings-->Build, Execution, Deployment-->Debugger

Solution 4:

This happens time to time, try these three options in any order:

1. Restart Android Studio ( preferably with invalidated caches as well )
2. Restart your phone
3. Deactivate and reactivate usb debugging

Solution 5:

one of the reasons is that your application is marked as not debuggable in the build.gradle file

buildTypes{
    release{
        debuggable false
    }
}

another reason maybe you did not allow ADB integration. You should have Tools->Android->Enable ADB Integration active