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36.2. After rebooting Xen-based guests the console freezes

Occasionally, a Xen guest's console freezes when the guest boots. The console still displays messages but the user cannot log in.
To fix this issue add the following line to the /etc/inittab file:
1:12345:respawn:/sbin/mingetty xvc0
After saving the file, reboot. The console session should now be interactive as expected.