Connecting to Ubuntu 22.04 PC on LAN usually fails

[John Rose]

I have 2 Ubuntu Desktop 22.04 (i.e. client and connecting to) PCs on LAN with static NAT addresses, both running Gnome & using Wayland.I have the Settings' Remote Desktop & Remote Control Enabled on the client. Connection is by RDP. When I try to connect I get a flash of the connecting to's screen and it disappears, except that it worked once out of about 20 attempts.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: remmina 1.4.25+dfsg-1ubuntu0.1
ProcVersionSignature: Ubuntu 5.19.0-50.50-generic 5.19.17
Uname: Linux 5.19.0-50-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Aug 4 08:49:05 2023
InstallationDate: Installed on 2023-06-15 (49 days ago)
InstallationMedia: Ubuntu 22.04.2 LTS "Jammy Jellyfish" - Release amd64 (20230223)
SourcePackage: remmina
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[John Rose (johnaaronrose)]

I think that the cause of the problem might be bug "xrdp fails to start" 2031538. It would be helpful if the developers took a look at that first.

[John Rose (johnaaronrose)]

I've just tried the changes outlined at https://pimylifeup.com/ubuntu-xrdp/

After stopping the xrdp service & starting the service again it failed to start properly, its status is:
× xrdp.service - xrdp daemon
     Loaded: loaded (/lib/systemd/system/xrdp.service; enabled; vendor preset: enabled)
     Active: failed (Result: exit-code) since Fri 2023-08-25 11:43:52 BST; 16s ago
       Docs: man:xrdp(8)
             man:xrdp.ini(5)
    Process: 1601088 ExecStartPre=/bin/sh /usr/share/xrdp/socksetup (code=exited, status=0/SUCCESS)
    Process: 1601096 ExecStart=/usr/sbin/xrdp $XRDP_OPTIONS (code=exited, status=1/FAILURE)
        CPU: 17ms

Aug 25 11:43:52 Demonstrator systemd[1]: Starting xrdp daemon...
Aug 25 11:43:52 Demonstrator xrdp[1601096]: [INFO ] address [0.0.0.0] port [3389] mode 1
Aug 25 11:43:52 Demonstrator xrdp[1601096]: [INFO ] listening to port 3389 on 0.0.0.0
Aug 25 11:43:52 Demonstrator xrdp[1601096]: [ERROR] g_tcp_bind(7, 3389) failed bind IPv6 (errno=98) an>
Aug 25 11:43:52 Demonstrator xrdp[1601096]: [ERROR] trans_listen_address failed
Aug 25 11:43:52 Demonstrator xrdp[1601096]: [ERROR] Failed to start xrdp daemon, possibly address alre>
Aug 25 11:43:52 Demonstrator systemd[1]: xrdp.service: Control process exited, code=exited, status=1/F>
Aug 25 11:43:52 Demonstrator systemd[1]: xrdp.service: Failed with result 'exit-code'.
Aug 25 11:43:52 Demonstrator systemd[1]: Failed to start xrdp daemon.