(Almost) the same thing happens if you create a new feisty installation using (e.g.) debootstrap.
The reason for this problem appears to be that the postinst script unconditionally runs setupcon --force --save at the end. This messes up the X display. Switching to text mode and back into X cures the display anomaly, but ... Why is that call there, anyway? It definitely doesn't belong into a postinst! -- console-setup messes up usplash and vice versa https://launchpad.net/bugs/60483 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs