Fedora 28, Tiger VNC Server black screen

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I want to start by saying that I've been dealing with this issue for a while. I've done much research and haven't found a solution. I have Fedora 28 installed with the Tiger VNC Server (tigervnc.x86_64 1.9.0-3-fc28).

I have disabled SELinux and have followed the instructions to setup tigervnc as a service through systemd. My service file is as follows:

"/etc/systemd/system/vncserver@.service" file:

[Unit]

Description=Remote desktop service (VNC)

After=syslog.target network.target

[Service]

Type=forking

WorkingDirectory=/root

User=root

Group=root

PIDFile=/root/.vnc/%H%i.pid

ExecStartPre=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'

ExecStart=/usr/bin/vncserver

Restart=on-success

RestartSec=15

[Install]

WantedBy=multi-user.target

Now my xstartup file

"~/.vnc/xstartup" file:

#!/bin/sh

set SESSION_MANAGER

unset DBUS_SESSION_BUS_ADDRESS

exec /usr/bin/gnome-session &

# exec /etc/X11/xinit/xinitrc

# exec startxfce4

# exec /usr/bin/mate-session

The service starts up successfully and I have made a vnc password for the root user. My issue revolves around the xstartup file. Whenever I try to VNC in with gnome-session, I only get a black screen. I installed the mate desktop environment and that works. However, I want to run gnome over VNC since there are applications that I can't run via mate.

Here's the process the service is running:

       ‣ 32265 /usr/bin/Xvnc :1 -auth /root/.Xauthority -desktop mydomain.net:1 (root) -fp catalogue:/etc/X11/fontpath.d -geometry 1024x768 -pn -rfbauth /root/.vnc/passwd -rfbport 5901 -rfbwait 30000

Please let me know how to make this work with gnome.

Many thanks