Fedora: Connect to remote, but can't log in

[BlazeMiskulin]

From Fedora box to Fedora box.  I've tried from multiple computers, so the local box isn't the problem.

I can connect to the remote computer.  It shows the login screen with the current date and time.   But when I try to type in a password or click anything, it doesn't work.

I thought it might be because the remote computer is a laptop and the user closes it (which should put the computer into sleep mode).  But I asked the owner to leave the laptop open (not close the lid), but I'm still experiencing the problem.

Any ideas?