`journalctl -n 144 > journal.txt` from Ubuntu 24 also looks interesting: ``` gnome-session[125968]: gnome-session-binary[125968]: WARNING: Could not check if unit [email protected] is active: Error calling StartServiceByName for org.freedesktop.systemd1: Process org.freedesktop.systemd1 exited with status 1 ```
** Attachment added: "journal.txt" https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/2152899/+attachment/5971178/+files/journal.txt ** Description changed: I use Remmina 1.4.40 to remote connect from Ubuntu 26.04 LTS to Ubuntu 24.04.4 LTS. Remmina fails with ``` There is more info about debugging Remmina on https://gitlab.com/Remmina/Remmina/-/wikis/Usage/Remmina-debugging (DEBUG) - (rcw_map_event_fullscreen) - Mapping: remmina-connection-window-fullscreen (DEBUG) - (remmina_protocol_widget_get_multimon) - Multi monitor is set to 0 (DEBUG) - (rcw_map_event_fullscreen) - Fullscreen on one monitor (DEBUG) - (remmina_protocol_widget_map_event) - Calling plugin mapping function (DEBUG) - (rco_update_toolbar) - Using #00ff00 as background color (DEBUG) - (remmina_protocol_widget_open_connection_real) - Opening connection (DEBUG) - (remmina_rdp_event_init) - Disable smooth scrolling is set to 0 (DEBUG) - (remmina_rdp_event_init) - Adding GDK_SMOOTH_SCROLL_MASK (DEBUG) - (remmina_protocol_widget_open_connection_real) - Have SSH (DEBUG) - (remmina_rdp_main) - RDP data path is /home/a/.local/share/remmina/RDP (DEBUG) - (remmina_rdp_main) - Not using system proxy settings (DEBUG) - (remmina_rdp_tunnel_init) - Tunnel init (DEBUG) - (remmina_protocol_widget_start_direct_tunnel) - SSH tunnel initialization… (DEBUG) - (remmina_protocol_widget_start_direct_tunnel) - Calling remmina_public_get_server_port (DEBUG) - (remmina_protocol_widget_start_direct_tunnel) - Calling remmina_public_get_server_port (tunnel) (DEBUG) - (remmina_protocol_widget_start_direct_tunnel) - server: 172.30.1.99, port: 3389 (DEBUG) - (remmina_rdp_tunnel_init) - protocol_plugin_start_direct_tunnel() returned [172.30.1.99]:3389 (DEBUG) - (remmina_rdp_tunnel_init) - Tunnel has been optionally initialized. Now connecting to 172.30.1.99:3389 (DEBUG) - (remmina_rdp_main) - gfx_h264_available: 0 (DEBUG) - (remmina_rdp_main) - Resolution set by the user: 2560x1440 (DEBUG) - (remmina_rdp_main) - Resolution set after workarounds: 2560x1440 (DEBUG) - (remmina_rdp_main) - proxy_type: (null) (DEBUG) - (remmina_rdp_main) - proxy_username: (null) (DEBUG) - (remmina_rdp_main) - proxy_password: (null) (DEBUG) - (remmina_rdp_main) - proxy_hostname: (null) (DEBUG) - (remmina_rdp_main) - proxy_port: 80 (DEBUG) - (remmina_rdp_main) - Network settings not set (DEBUG) - (remmina_rdp_main) - rdp_keyboard_remapping_list: (null) (DEBUG) - (remmina_rdp_main) - Log level set to to INFO (DEBUG) - (remmina_rdp_post_connect) - bpp: 32 (DEBUG) - (remmina_rdp_post_connect) - CAIRO_FORMAT_RGB24 (DEBUG) - (remmina_rdp_OnChannelConnectedEventHandler) - Channel rdpdr has been opened (DEBUG) - (remmina_rdp_OnChannelConnectedEventHandler) - Channel rdpsnd has been opened (DEBUG) - (remmina_rdp_event_connected) - [2026-05-18T21:15:15.280449+09] - Linux - a - Connected to 172.30.1.99 via RDP (DEBUG) - (remmina_rdp_OnChannelConnectedEventHandler) - Channel cliprdr has been opened (DEBUG) - (remmina_rdp_OnChannelConnectedEventHandler) - Channel drdynvc has been opened (DEBUG) - (remmina_rdp_event_on_focus_in) - Top level name is: remmina-connection-window-fullscreen (DEBUG) - (rco_on_connect) - Connect signal emitted (DEBUG) - (rco_on_connect) - We save the last successful connection date (DEBUG) - (remmina_file_state_last_success) - State file /home/a/.cache/remmina/group_rdp_hgst_172-30-1-99-3389.remmina.state. (DEBUG) - (remmina_file_state_last_success) - Last connection made on 20260518. (DEBUG) - (rco_on_connect) - Saving credentials (DEBUG) - (remmina_file_save) - Saving profile (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_store_password) - Password “password” saved for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_delete_password) - password “ssh_tunnel_password” deleted for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_delete_password) - password “gateway_password” deleted for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_delete_password) - password “ssh_tunnel_passphrase” deleted for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - Profile saved (DEBUG) - (remmina_file_save) - Connection profile states saved (DEBUG) - (remmina_network_monitor_status) - G_NETWORK_CONNECTIVITY_FULL (DEBUG) - (rco_update_toolbar) - Using #00ff00 as background color (DEBUG) - (rco_on_connect) - Trying to present the window (DEBUG) - (rcw_map_event_fullscreen) - Mapping: remmina-connection-window-fullscreen (DEBUG) - (remmina_protocol_widget_get_multimon) - Multi monitor is set to 0 (DEBUG) - (rcw_map_event_fullscreen) - Fullscreen on one monitor (DEBUG) - (remmina_protocol_widget_map_event) - Calling plugin mapping function - (DEBUG) - (remmina_rdp_event_on_map) - Map event received, disabling TS_SUPPRESS_OUTPUT_PDU + (DEBUG) - (remmina_rdp_event_on_map) - Map event received, disabling TS_SUPPRESS_OUTPUT_PDU (DEBUG) - (rf_auto_reconnect) - maxattempts from default: 20 (DEBUG) - (rf_auto_reconnect) - maxattempts from general preferences: 20 (DEBUG) - (rf_auto_reconnect) - maxattempts from general plugin: 0 (DEBUG) - (rf_auto_reconnect) - maxattempts set to: 20 (DEBUG) - (remmina_rdp_main_loop) - [2026-05-18T21:15:45.276374+09] - Linux - a - Disconnected from 172.30.1.99 via RDP (DEBUG) - (remmina_rdp_OnChannelDisconnectedEventHandler) - Channel rdpdr has been closed (DEBUG) - (remmina_rdp_OnChannelDisconnectedEventHandler) - Channel rdpsnd has been closed (DEBUG) - (remmina_rdp_OnChannelDisconnectedEventHandler) - Channel cliprdr has been closed (DEBUG) - (remmina_rdp_OnChannelDisconnectedEventHandler) - Channel drdynvc has been closed (DEBUG) - (remmina_rdp_main_loop) - RDP client disconnected (DEBUG) - (rco_on_disconnect) - Disconnect signal received on RemminaProtocolWidget (DEBUG) - (remmina_file_save) - Saving profile (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_store_password) - Password “password” saved for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_delete_password) - password “ssh_tunnel_password” deleted for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_delete_password) - password “gateway_password” deleted for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_delete_password) - password “ssh_tunnel_passphrase” deleted for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - Profile saved (DEBUG) - (remmina_file_save) - Connection profile states saved (DEBUG) - (remmina_network_monitor_status) - G_NETWORK_CONNECTIVITY_FULL (DEBUG) - (rco_closewin) - deleting motion (DEBUG) - (rco_on_disconnect) - Disconnected ``` But I think it is problem of gdm. I think key warning is "Gdm: on_display_added: assertion 'GDM_IS_REMOTE_DISPLAY (display)' failed" ``` $ 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 18:05:08 KST; 3h 11min ago - Process: 1147 ExecStartPre=/usr/share/gdm/generate-config (code=exited, status=0/SUCCESS) - Main PID: 1186 (gdm3) - Tasks: 4 (limit: 35816) - Memory: 13.8M (peak: 14.5M) - CPU: 187ms - CGroup: /system.slice/gdm.service - └─1186 /usr/sbin/gdm3 + Loaded: loaded (/usr/lib/systemd/system/gdm.service; static) + Active: active (running) since Mon 2026-05-18 18:05:08 KST; 3h 11min ago + Process: 1147 ExecStartPre=/usr/share/gdm/generate-config (code=exited, status=0/SUCCESS) + Main PID: 1186 (gdm3) + Tasks: 4 (limit: 35816) + Memory: 13.8M (peak: 14.5M) + CPU: 187ms + CGroup: /system.slice/gdm.service + └─1186 /usr/sbin/gdm3 - May 18 18:05:07 HGST systemd[1]: Starting gdm.service - GNOME Display Manager... - May 18 18:05:08 HGST systemd[1]: Started gdm.service - GNOME Display Manager. - May 18 18:05:09 HGST gdm3[1186]: Gdm: on_display_added: assertion 'GDM_IS_REMOTE_DISPLAY (display)' failed - May 18 18:05:09 HGST gdm-launch-environment][1344]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) - May 18 21:01:42 HGST gdm-launch-environment][80211]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) - May 18 21:03:36 HGST gdm-launch-environment][90236]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) - May 18 21:04:48 HGST gdm-launch-environment][96668]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) - May 18 21:08:07 HGST gdm-launch-environment][113415]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) - May 18 21:11:01 HGST gdm-launch-environment][125336]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) - May 18 21:15:15 HGST gdm-launch-environment][125954]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) + May 18 18:05:07 HG systemd[1]: Starting gdm.service - GNOME Display Manager... + May 18 18:05:08 HG systemd[1]: Started gdm.service - GNOME Display Manager. + May 18 18:05:09 HG gdm3[1186]: Gdm: on_display_added: assertion 'GDM_IS_REMOTE_DISPLAY (display)' failed + May 18 18:05:09 HG gdm-launch-environment][1344]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) + May 18 21:01:42 HG gdm-launch-environment][80211]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) + May 18 21:03:36 HG gdm-launch-environment][90236]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) + May 18 21:04:48 HG gdm-launch-environment][96668]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) + May 18 21:08:07 HG gdm-launch-environment][113415]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) + May 18 21:11:01 HG gdm-launch-environment][125336]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) + May 18 21:15:15 HG gdm-launch-environment][125954]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) ``` See result of `ubuntu-bug gdm3 --save gdm_bug.txt` in attachment. ** Description changed: I use Remmina 1.4.40 to remote connect from Ubuntu 26.04 LTS to Ubuntu 24.04.4 LTS. Remmina fails with ``` There is more info about debugging Remmina on https://gitlab.com/Remmina/Remmina/-/wikis/Usage/Remmina-debugging (DEBUG) - (rcw_map_event_fullscreen) - Mapping: remmina-connection-window-fullscreen (DEBUG) - (remmina_protocol_widget_get_multimon) - Multi monitor is set to 0 (DEBUG) - (rcw_map_event_fullscreen) - Fullscreen on one monitor (DEBUG) - (remmina_protocol_widget_map_event) - Calling plugin mapping function (DEBUG) - (rco_update_toolbar) - Using #00ff00 as background color (DEBUG) - (remmina_protocol_widget_open_connection_real) - Opening connection (DEBUG) - (remmina_rdp_event_init) - Disable smooth scrolling is set to 0 (DEBUG) - (remmina_rdp_event_init) - Adding GDK_SMOOTH_SCROLL_MASK (DEBUG) - (remmina_protocol_widget_open_connection_real) - Have SSH (DEBUG) - (remmina_rdp_main) - RDP data path is /home/a/.local/share/remmina/RDP (DEBUG) - (remmina_rdp_main) - Not using system proxy settings (DEBUG) - (remmina_rdp_tunnel_init) - Tunnel init (DEBUG) - (remmina_protocol_widget_start_direct_tunnel) - SSH tunnel initialization… (DEBUG) - (remmina_protocol_widget_start_direct_tunnel) - Calling remmina_public_get_server_port (DEBUG) - (remmina_protocol_widget_start_direct_tunnel) - Calling remmina_public_get_server_port (tunnel) (DEBUG) - (remmina_protocol_widget_start_direct_tunnel) - server: 172.30.1.99, port: 3389 (DEBUG) - (remmina_rdp_tunnel_init) - protocol_plugin_start_direct_tunnel() returned [172.30.1.99]:3389 (DEBUG) - (remmina_rdp_tunnel_init) - Tunnel has been optionally initialized. Now connecting to 172.30.1.99:3389 (DEBUG) - (remmina_rdp_main) - gfx_h264_available: 0 (DEBUG) - (remmina_rdp_main) - Resolution set by the user: 2560x1440 (DEBUG) - (remmina_rdp_main) - Resolution set after workarounds: 2560x1440 (DEBUG) - (remmina_rdp_main) - proxy_type: (null) (DEBUG) - (remmina_rdp_main) - proxy_username: (null) (DEBUG) - (remmina_rdp_main) - proxy_password: (null) (DEBUG) - (remmina_rdp_main) - proxy_hostname: (null) (DEBUG) - (remmina_rdp_main) - proxy_port: 80 (DEBUG) - (remmina_rdp_main) - Network settings not set (DEBUG) - (remmina_rdp_main) - rdp_keyboard_remapping_list: (null) (DEBUG) - (remmina_rdp_main) - Log level set to to INFO (DEBUG) - (remmina_rdp_post_connect) - bpp: 32 (DEBUG) - (remmina_rdp_post_connect) - CAIRO_FORMAT_RGB24 (DEBUG) - (remmina_rdp_OnChannelConnectedEventHandler) - Channel rdpdr has been opened (DEBUG) - (remmina_rdp_OnChannelConnectedEventHandler) - Channel rdpsnd has been opened (DEBUG) - (remmina_rdp_event_connected) - [2026-05-18T21:15:15.280449+09] - Linux - a - Connected to 172.30.1.99 via RDP (DEBUG) - (remmina_rdp_OnChannelConnectedEventHandler) - Channel cliprdr has been opened (DEBUG) - (remmina_rdp_OnChannelConnectedEventHandler) - Channel drdynvc has been opened (DEBUG) - (remmina_rdp_event_on_focus_in) - Top level name is: remmina-connection-window-fullscreen (DEBUG) - (rco_on_connect) - Connect signal emitted (DEBUG) - (rco_on_connect) - We save the last successful connection date (DEBUG) - (remmina_file_state_last_success) - State file /home/a/.cache/remmina/group_rdp_hgst_172-30-1-99-3389.remmina.state. (DEBUG) - (remmina_file_state_last_success) - Last connection made on 20260518. (DEBUG) - (rco_on_connect) - Saving credentials (DEBUG) - (remmina_file_save) - Saving profile (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_store_password) - Password “password” saved for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_delete_password) - password “ssh_tunnel_password” deleted for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_delete_password) - password “gateway_password” deleted for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_delete_password) - password “ssh_tunnel_passphrase” deleted for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - Profile saved (DEBUG) - (remmina_file_save) - Connection profile states saved (DEBUG) - (remmina_network_monitor_status) - G_NETWORK_CONNECTIVITY_FULL (DEBUG) - (rco_update_toolbar) - Using #00ff00 as background color (DEBUG) - (rco_on_connect) - Trying to present the window (DEBUG) - (rcw_map_event_fullscreen) - Mapping: remmina-connection-window-fullscreen (DEBUG) - (remmina_protocol_widget_get_multimon) - Multi monitor is set to 0 (DEBUG) - (rcw_map_event_fullscreen) - Fullscreen on one monitor (DEBUG) - (remmina_protocol_widget_map_event) - Calling plugin mapping function (DEBUG) - (remmina_rdp_event_on_map) - Map event received, disabling TS_SUPPRESS_OUTPUT_PDU (DEBUG) - (rf_auto_reconnect) - maxattempts from default: 20 (DEBUG) - (rf_auto_reconnect) - maxattempts from general preferences: 20 (DEBUG) - (rf_auto_reconnect) - maxattempts from general plugin: 0 (DEBUG) - (rf_auto_reconnect) - maxattempts set to: 20 (DEBUG) - (remmina_rdp_main_loop) - [2026-05-18T21:15:45.276374+09] - Linux - a - Disconnected from 172.30.1.99 via RDP (DEBUG) - (remmina_rdp_OnChannelDisconnectedEventHandler) - Channel rdpdr has been closed (DEBUG) - (remmina_rdp_OnChannelDisconnectedEventHandler) - Channel rdpsnd has been closed (DEBUG) - (remmina_rdp_OnChannelDisconnectedEventHandler) - Channel cliprdr has been closed (DEBUG) - (remmina_rdp_OnChannelDisconnectedEventHandler) - Channel drdynvc has been closed (DEBUG) - (remmina_rdp_main_loop) - RDP client disconnected (DEBUG) - (rco_on_disconnect) - Disconnect signal received on RemminaProtocolWidget (DEBUG) - (remmina_file_save) - Saving profile (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_store_password) - Password “password” saved for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_delete_password) - password “ssh_tunnel_password” deleted for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_delete_password) - password “gateway_password” deleted for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_delete_password) - password “ssh_tunnel_passphrase” deleted for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - Profile saved (DEBUG) - (remmina_file_save) - Connection profile states saved (DEBUG) - (remmina_network_monitor_status) - G_NETWORK_CONNECTIVITY_FULL (DEBUG) - (rco_closewin) - deleting motion (DEBUG) - (rco_on_disconnect) - Disconnected ``` But I think it is problem of gdm. I think key warning is "Gdm: on_display_added: assertion 'GDM_IS_REMOTE_DISPLAY (display)' failed" ``` $ 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 18:05:08 KST; 3h 11min ago Process: 1147 ExecStartPre=/usr/share/gdm/generate-config (code=exited, status=0/SUCCESS) Main PID: 1186 (gdm3) Tasks: 4 (limit: 35816) Memory: 13.8M (peak: 14.5M) CPU: 187ms CGroup: /system.slice/gdm.service └─1186 /usr/sbin/gdm3 May 18 18:05:07 HG systemd[1]: Starting gdm.service - GNOME Display Manager... May 18 18:05:08 HG systemd[1]: Started gdm.service - GNOME Display Manager. May 18 18:05:09 HG gdm3[1186]: Gdm: on_display_added: assertion 'GDM_IS_REMOTE_DISPLAY (display)' failed May 18 18:05:09 HG gdm-launch-environment][1344]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) May 18 21:01:42 HG gdm-launch-environment][80211]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) May 18 21:03:36 HG gdm-launch-environment][90236]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) May 18 21:04:48 HG gdm-launch-environment][96668]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) May 18 21:08:07 HG gdm-launch-environment][113415]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) May 18 21:11:01 HG gdm-launch-environment][125336]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) May 18 21:15:15 HG gdm-launch-environment][125954]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) ``` See result of `ubuntu-bug gdm3 --save gdm_bug.txt` in attachment. + + P.S. User name was manually changed for privacy. ** Description changed: I use Remmina 1.4.40 to remote connect from Ubuntu 26.04 LTS to Ubuntu 24.04.4 LTS. Remmina fails with ``` There is more info about debugging Remmina on https://gitlab.com/Remmina/Remmina/-/wikis/Usage/Remmina-debugging (DEBUG) - (rcw_map_event_fullscreen) - Mapping: remmina-connection-window-fullscreen (DEBUG) - (remmina_protocol_widget_get_multimon) - Multi monitor is set to 0 (DEBUG) - (rcw_map_event_fullscreen) - Fullscreen on one monitor (DEBUG) - (remmina_protocol_widget_map_event) - Calling plugin mapping function (DEBUG) - (rco_update_toolbar) - Using #00ff00 as background color (DEBUG) - (remmina_protocol_widget_open_connection_real) - Opening connection (DEBUG) - (remmina_rdp_event_init) - Disable smooth scrolling is set to 0 (DEBUG) - (remmina_rdp_event_init) - Adding GDK_SMOOTH_SCROLL_MASK (DEBUG) - (remmina_protocol_widget_open_connection_real) - Have SSH (DEBUG) - (remmina_rdp_main) - RDP data path is /home/a/.local/share/remmina/RDP (DEBUG) - (remmina_rdp_main) - Not using system proxy settings (DEBUG) - (remmina_rdp_tunnel_init) - Tunnel init (DEBUG) - (remmina_protocol_widget_start_direct_tunnel) - SSH tunnel initialization… (DEBUG) - (remmina_protocol_widget_start_direct_tunnel) - Calling remmina_public_get_server_port (DEBUG) - (remmina_protocol_widget_start_direct_tunnel) - Calling remmina_public_get_server_port (tunnel) (DEBUG) - (remmina_protocol_widget_start_direct_tunnel) - server: 172.30.1.99, port: 3389 (DEBUG) - (remmina_rdp_tunnel_init) - protocol_plugin_start_direct_tunnel() returned [172.30.1.99]:3389 (DEBUG) - (remmina_rdp_tunnel_init) - Tunnel has been optionally initialized. Now connecting to 172.30.1.99:3389 (DEBUG) - (remmina_rdp_main) - gfx_h264_available: 0 (DEBUG) - (remmina_rdp_main) - Resolution set by the user: 2560x1440 (DEBUG) - (remmina_rdp_main) - Resolution set after workarounds: 2560x1440 (DEBUG) - (remmina_rdp_main) - proxy_type: (null) (DEBUG) - (remmina_rdp_main) - proxy_username: (null) (DEBUG) - (remmina_rdp_main) - proxy_password: (null) (DEBUG) - (remmina_rdp_main) - proxy_hostname: (null) (DEBUG) - (remmina_rdp_main) - proxy_port: 80 (DEBUG) - (remmina_rdp_main) - Network settings not set (DEBUG) - (remmina_rdp_main) - rdp_keyboard_remapping_list: (null) (DEBUG) - (remmina_rdp_main) - Log level set to to INFO (DEBUG) - (remmina_rdp_post_connect) - bpp: 32 (DEBUG) - (remmina_rdp_post_connect) - CAIRO_FORMAT_RGB24 (DEBUG) - (remmina_rdp_OnChannelConnectedEventHandler) - Channel rdpdr has been opened (DEBUG) - (remmina_rdp_OnChannelConnectedEventHandler) - Channel rdpsnd has been opened (DEBUG) - (remmina_rdp_event_connected) - [2026-05-18T21:15:15.280449+09] - Linux - a - Connected to 172.30.1.99 via RDP (DEBUG) - (remmina_rdp_OnChannelConnectedEventHandler) - Channel cliprdr has been opened (DEBUG) - (remmina_rdp_OnChannelConnectedEventHandler) - Channel drdynvc has been opened (DEBUG) - (remmina_rdp_event_on_focus_in) - Top level name is: remmina-connection-window-fullscreen (DEBUG) - (rco_on_connect) - Connect signal emitted (DEBUG) - (rco_on_connect) - We save the last successful connection date (DEBUG) - (remmina_file_state_last_success) - State file /home/a/.cache/remmina/group_rdp_hgst_172-30-1-99-3389.remmina.state. (DEBUG) - (remmina_file_state_last_success) - Last connection made on 20260518. (DEBUG) - (rco_on_connect) - Saving credentials (DEBUG) - (remmina_file_save) - Saving profile (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_store_password) - Password “password” saved for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_delete_password) - password “ssh_tunnel_password” deleted for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_delete_password) - password “gateway_password” deleted for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_delete_password) - password “ssh_tunnel_passphrase” deleted for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - Profile saved (DEBUG) - (remmina_file_save) - Connection profile states saved (DEBUG) - (remmina_network_monitor_status) - G_NETWORK_CONNECTIVITY_FULL (DEBUG) - (rco_update_toolbar) - Using #00ff00 as background color (DEBUG) - (rco_on_connect) - Trying to present the window (DEBUG) - (rcw_map_event_fullscreen) - Mapping: remmina-connection-window-fullscreen (DEBUG) - (remmina_protocol_widget_get_multimon) - Multi monitor is set to 0 (DEBUG) - (rcw_map_event_fullscreen) - Fullscreen on one monitor (DEBUG) - (remmina_protocol_widget_map_event) - Calling plugin mapping function (DEBUG) - (remmina_rdp_event_on_map) - Map event received, disabling TS_SUPPRESS_OUTPUT_PDU (DEBUG) - (rf_auto_reconnect) - maxattempts from default: 20 (DEBUG) - (rf_auto_reconnect) - maxattempts from general preferences: 20 (DEBUG) - (rf_auto_reconnect) - maxattempts from general plugin: 0 (DEBUG) - (rf_auto_reconnect) - maxattempts set to: 20 (DEBUG) - (remmina_rdp_main_loop) - [2026-05-18T21:15:45.276374+09] - Linux - a - Disconnected from 172.30.1.99 via RDP (DEBUG) - (remmina_rdp_OnChannelDisconnectedEventHandler) - Channel rdpdr has been closed (DEBUG) - (remmina_rdp_OnChannelDisconnectedEventHandler) - Channel rdpsnd has been closed (DEBUG) - (remmina_rdp_OnChannelDisconnectedEventHandler) - Channel cliprdr has been closed (DEBUG) - (remmina_rdp_OnChannelDisconnectedEventHandler) - Channel drdynvc has been closed (DEBUG) - (remmina_rdp_main_loop) - RDP client disconnected (DEBUG) - (rco_on_disconnect) - Disconnect signal received on RemminaProtocolWidget (DEBUG) - (remmina_file_save) - Saving profile (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_store_password) - Password “password” saved for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_delete_password) - password “ssh_tunnel_password” deleted for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_delete_password) - password “gateway_password” deleted for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - We have a secret and disablepasswordstoring=0 (DEBUG) - (remmina_plugin_glibsecret_delete_password) - password “ssh_tunnel_passphrase” deleted for file /home/a/.local/share/remmina/group_rdp_hgst_172-30-1-99-3389.remmina (DEBUG) - (remmina_file_save) - Profile saved (DEBUG) - (remmina_file_save) - Connection profile states saved (DEBUG) - (remmina_network_monitor_status) - G_NETWORK_CONNECTIVITY_FULL (DEBUG) - (rco_closewin) - deleting motion (DEBUG) - (rco_on_disconnect) - Disconnected ``` - But I think it is problem of gdm. I think key warning is "Gdm: on_display_added: assertion 'GDM_IS_REMOTE_DISPLAY (display)' failed" + But I think it is problem of gdm on the Ubuntu 24. I think key warning is "Gdm: on_display_added: assertion 'GDM_IS_REMOTE_DISPLAY (display)' failed" ``` $ 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 18:05:08 KST; 3h 11min ago Process: 1147 ExecStartPre=/usr/share/gdm/generate-config (code=exited, status=0/SUCCESS) Main PID: 1186 (gdm3) Tasks: 4 (limit: 35816) Memory: 13.8M (peak: 14.5M) CPU: 187ms CGroup: /system.slice/gdm.service └─1186 /usr/sbin/gdm3 May 18 18:05:07 HG systemd[1]: Starting gdm.service - GNOME Display Manager... May 18 18:05:08 HG systemd[1]: Started gdm.service - GNOME Display Manager. May 18 18:05:09 HG gdm3[1186]: Gdm: on_display_added: assertion 'GDM_IS_REMOTE_DISPLAY (display)' failed May 18 18:05:09 HG gdm-launch-environment][1344]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) May 18 21:01:42 HG gdm-launch-environment][80211]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) May 18 21:03:36 HG gdm-launch-environment][90236]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) May 18 21:04:48 HG gdm-launch-environment][96668]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) May 18 21:08:07 HG gdm-launch-environment][113415]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) May 18 21:11:01 HG gdm-launch-environment][125336]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) May 18 21:15:15 HG gdm-launch-environment][125954]: pam_unix(gdm-launch-environment:session): session opened for user gdm(uid=120) by (uid=0) ``` See result of `ubuntu-bug gdm3 --save gdm_bug.txt` in attachment. P.S. User name was manually changed for privacy. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2152899 Title: RDP. Gdm: on_display_added: assertion 'GDM_IS_REMOTE_DISPLAY (display)' failed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/2152899/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
