Bug#943356: no login in vm

[jnqnfe at gmail.com]

Package: gnome
Version: 1:3.30+2

Since the upgrade to Gnome 3.34 I no longer get a login prompt in a Sid
install within a VirtualBox VM. All I get is the background and a
cursor.

I reinstated from backup and found that I am forced to hold back the
gnome-desktop3-data package to the 3.30 version (iirc) in order to
prevent the problem surfacing.

I've been holding back from reporting it since for a brief period
during uploading of the 3.34 packages I experienced it on my host
install also which was corrected in the next batch of updates, but the
problem still remains in the VM.