The logs indicate that the VT switch is probably still not occurring. Can you check if when you end up on a blank screen you can get back to your session by doing the VT switch with the alt+ctrl+F keys?
Also, do you go to a greeter and enter your password before returning to the user session?
Exactly what hardware are you reproducing the problem on? What video cards / drivers? I'm at a sprint and trying with the laptops here and no-one seems to be able to reproduce. We are finding that switching is running slower than we'd expect but we always get back to the guest session.
The logs indicate that the VT switch is probably still not occurring. Can you check if when you end up on a blank screen you can get back to your session by doing the VT switch with the alt+ctrl+F keys?
Also, do you go to a greeter and enter your password before returning to the user session?
Exactly what hardware are you reproducing the problem on? What video cards / drivers? I'm at a sprint and trying with the laptops here and no-one seems to be able to reproduce. We are finding that switching is running slower than we'd expect but we always get back to the guest session.