Nexus 4 does not show the RSA dialog when connecting USB in debug mode

Question

I did the factory reset, and my computer is newly installed. I enabled the USB debuging, and connect to the computer. It shows the drivers are installed successfully, and i can see so in the device manager. But the phone does not show the RSA dialog to comfirm the connection, and in the DDMS, it is offline... My nexus is official android 4.2.2 Has anyone met this issue? Please give advice! thanks!

/*****Update****/ I tried on my office computer. When connected to the office computer, the dialog, which shows the RSA key fingerprint, pops up. But as i tried this on my home computer, no dialog and merely the notifications on the bar.

Answer 1

Using terminal (cmd in windows), go into sdk/platform-tools folder.

Then launch adb devices command.

You should see "Starting daemon" and then the Fingerprint popup will appear on your device.

If does not, unplug usb cable, restart pc, plug the cable to phone and try again launching adb command.

Answer 2

For Linux adb kill-server or if adb is running in sudo sudo adb kill-server

On android device Settings > Developer options > Revoke USB debug authorizations USB Debug option is still Enabled

Connect the device to linux mach. sudo adb devices

check RSA Fingerprint popup is seen