I am also able to switch VTs in the gdm login prompt, but not when I have logged in.
xev seems to recieve Ctrl + Alt + F1 just fine, but for me the X server is not even attempting a terminal switch(, tail -f /var/log/Xorg.0.log and Ctrl + Alt + F1 after focusing the desktop does not give additional output as in your case).
Even if our symptoms appear to be slightly different, I would guess that the cause of the bug is the same.
I am also able to switch VTs in the gdm login prompt, but not when I have logged in.
xev seems to recieve Ctrl + Alt + F1 just fine, but for me the X server is not even attempting a terminal switch(, tail -f /var/log/Xorg.0.log and Ctrl + Alt + F1 after focusing the desktop does not give additional output as in your case).
Even if our symptoms appear to be slightly different, I would guess that the cause of the bug is the same.