Test again. Remmina on Ubuntu 26
```
$ systemctl status gdm
● gdm.service - GNOME Display Manager
Loaded: loaded (/usr/lib/systemd/system/gdm.service; static)
Active: active (running) since Mon 2026-05-18 21:50:13 KST; 4min 20s ago
Process: 1320 ExecStartPre=/usr/share/gdm/generate-config (code=exited,
status=0/SUCCESS)
Main PID: 1331 (gdm3)
Tasks: 4 (limit: 35816)
Memory: 7.6M (peak: 8.4M)
CPU: 78ms
CGroup: /system.slice/gdm.service
└─1331 /usr/sbin/gdm3
May 18 21:50:48 HGST gdm-launch-environment][2986]: Gdm: GdmSessionWorker:
session opened creating reply...
May 18 21:50:48 HGST gdm-launch-environment][2986]: Gdm: GdmSessionWorker:
state SESSION_STARTED
May 18 21:50:48 HGST gdm-launch-environment][2986]: Gdm: GdmSession worker:
watching pid 2993
May 18 21:50:48 HGST gdm3[1331]: Gdm: GdmSession: Emitting 'session-started'
signal with pid '2993'
May 18 21:50:48 HGST gdm3[1331]: Gdm: GdmDisplay: Greeter started
May 18 21:50:48 HGST gdm3[1331]: Gdm: GdmManager: trying to register new display
May 18 21:50:48 HGST gdm3[1331]: Gdm: GdmCommon: Found session c2 for PID 2993,
using
May 18 21:50:48 HGST gdm3[1331]: Gdm: GdmManager: Error while retrieving tty
for session: Error getting tty for session id c2 from systemd: No data available
May 18 21:50:48 HGST gdm3[1331]: Gdm: GdmLocalDisplayFactory: display status
changed: 2
May 18 21:50:48 HGST gdm3[1331]: Gdm: GdmRemoteDisplayFactory: remote display
status changed: 2
```
gdm on Ubuntu 24:
```
$ systemctl status gdm
● gdm.service - GNOME Display Manager
Loaded: loaded (/usr/lib/systemd/system/gdm.service; static)
Active: active (running) since Mon 2026-05-18 21:50:13 KST; 4min 20s ago
Process: 1320 ExecStartPre=/usr/share/gdm/generate-config (code=exited,
status=0/SUCCESS)
Main PID: 1331 (gdm3)
Tasks: 4 (limit: 35816)
Memory: 7.6M (peak: 8.4M)
CPU: 78ms
CGroup: /system.slice/gdm.service
└─1331 /usr/sbin/gdm3
May 18 21:50:48 HGST gdm-launch-environment][2986]: Gdm: GdmSessionWorker:
session opened creating reply...
May 18 21:50:48 HGST gdm-launch-environment][2986]: Gdm: GdmSessionWorker:
state SESSION_STARTED
May 18 21:50:48 HGST gdm-launch-environment][2986]: Gdm: GdmSession worker:
watching pid 2993
May 18 21:50:48 HGST gdm3[1331]: Gdm: GdmSession: Emitting 'session-started'
signal with pid '2993'
May 18 21:50:48 HGST gdm3[1331]: Gdm: GdmDisplay: Greeter started
May 18 21:50:48 HGST gdm3[1331]: Gdm: GdmManager: trying to register new display
May 18 21:50:48 HGST gdm3[1331]: Gdm: GdmCommon: Found session c2 for PID 2993,
using
May 18 21:50:48 HGST gdm3[1331]: Gdm: GdmManager: Error while retrieving tty
for session: Error getting tty for session id c2 from systemd: No data available
May 18 21:50:48 HGST gdm3[1331]: Gdm: GdmLocalDisplayFactory: display status
changed: 2
May 18 21:50:48 HGST gdm3[1331]: Gdm: GdmRemoteDisplayFactory: remote display
status changed: 2
```
Key point from Ubuntu 24 `sudo journalctl -n 800 > journal.txt`
```
gnome-session-binary[3003]: DEBUG(+): Could not make systemd aware of
GNOME_SETUP_DISPLAY=:1025 environment variable:
GDBus.Error:org.freedesktop.DBus.Error.NameHasNoOwner: Name
"org.freedesktop.systemd1" does not exist
```
** Attachment added: "Test again logs: "journal.txt", "ubuntu-bug gdm3.txt""
https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/2152899/+attachment/5971179/+files/2nd%20time.7z
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https://bugs.launchpad.net/bugs/2152899
Title:
RDP. Gdm: on_display_added: assertion 'GDM_IS_REMOTE_DISPLAY
(display)' failed
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