I have followed to the letter instructions from https://ubuntu.com/tutorials/ubuntu-desktop-aws#2-setting-up-tightvnc-on-aws to install Ubuntu Desktop on an EC2 instance.
I have opened both port 3389 for RDP connection, and 5901 for VNC connection. If I connect through RDP, with Microsoft Remote Desktop, everything works fine, except an extreme lag, which I don't think is due to the EC2 instance, as I am running on a t2.medium, same as I'm using for a Windows Server instance that runs flawlessly.
I have done some digging, and it seems this is a common problem with RDP, so I tried VNC, via VNC viewer. Problem is that I can't connect using VNC, just getting a "Can't connect to instance" error.
In case it helps, the below is the vnc log:
~$ more /home/ubuntu/.vnc/ip-172-31-27-107:1.log
12/10/21 09:26:40 Xvnc version TightVNC-1.3.10
12/10/21 09:26:40 Copyright (C) 2000-2009 TightVNC Group
12/10/21 09:26:40 Copyright (C) 1999 AT&T Laboratories Cambridge
12/10/21 09:26:40 All Rights Reserved.
12/10/21 09:26:40 See http://www.tightvnc.com/ for information on TightVNC
12/10/21 09:26:40 Desktop name 'X' (ip-172-31-27-107:1)
12/10/21 09:26:40 Protocol versions supported: 3.3, 3.7, 3.8, 3.7t, 3.8t
12/10/21 09:26:40 Listening for VNC connections on TCP port 5901
Font directory '/usr/share/fonts/X11/75dpi/' not found - ignoring
Font directory '/usr/share/fonts/X11/100dpi/' not found - ignoring
/home/ubuntu/.vnc/xstartup: 11: vncconfig: not found
/home/ubuntu/.vnc/xstartup: 13: gnome-settings-daemon: not found
metacity-Message: 09:26:41.664: could not find XKB extension.
(metacity:2580): metacity-WARNING **: 09:26:41.670: Failed to create compositor:
Missing composite extension required for compositing
(gnome-panel:2578): gnome-panel-WARNING **: 09:26:41.725: Failed to register cli
ent: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.S
essionManager was not provided by any .service files
Thanks in advance!
Andrea
