Comment 0 for bug 1750443

Error message the virtual machine Ubuntu 17.10:
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No protocol specified
Unable to init server: Could not connect: Connection refused

(nautilus:2377): Gtk-WARNING **: cannot open display: :0
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Note that it works in Ubuntu 18.04 and in the host with Ubuntu 17.10. It only fails in the virtual machine and the error has been introduced recently. 3D is NOT enabled.

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: gnome (not installed)
ProcVersionSignature: Ubuntu 4.13.0-32.35-generic 4.13.13
Uname: Linux 4.13.0-32-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Feb 19 17:12:45 2018
InstallationDate: Installed on 2017-09-30 (142 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170926)
SourcePackage: meta-gnome3
UpgradeStatus: No upgrade log present (probably fresh install)