Delta Chat Flatpak fails to connect second device after scanning QR code - D-Bus and xdg-settings errors

[ivkrotova]

- Operating System (Linux/Mac/Windows/iOS/Android): Linux (Ubuntu 20.04, 64-bit)

- Delta Chat Version: Flatpak version from Flathub (chat.delta.desktop)

- Expected behavior: When attempting to connect a second device (Android app) via QR code, Delta Chat should successfully establish the connection between the devices.

- Actual behavior: After scanning the QR code with the second device, the process of adding the second device hangs indefinitely, and no connection is established. Logs show multiple errors related to D-Bus, xdg-settings, and GTK widget failures.

Steps to reproduce the problem:

1. Install Delta Chat via Flatpak on Ubuntu 20.04.
2. Open the app and attempt to connect a second device using the QR code feature.
3. Scan the QR code from the second device.
4. Observe that the connection process hangs without successfully adding the device.

Screenshots:

• Logs:

  2024-10-05T16:59:21.678Z    main/index              INFO    ""  "Deltachat Version 1.46.8 flathub 1727722460000"
  2024-10-05T16:59:21.876Z    main/index              INFO    ""  "cwd /home/user/.var/app/chat.delta.desktop/config/DeltaChat/accounts"
  2024-10-05T16:59:21.879Z    main/deltachat          INFO    ""  "using deltachat-rpc-server at" {"serverPath":"/app/delta/resources/app/node_modules/@deltachat/stdio-rpc-server-linux-x64/deltachat-rpc-server"}
  2024-10-05T16:59:21.884Z    main/deltachat          INFO    ""  "HI"
  2024-10-05T16:59:21.885Z    main/deltachat          INFO    ""  "Ready, starting accounts io..."
  2024-10-05T16:59:21.885Z    main/deltachat          INFO    ""  "Started accounts io."
  2024-10-05T16:59:22.017Z    main/menu               INFO    ""  "rebuilding menu with locale en"
  2024-10-05T16:59:22.173Z    core/event              WARNING ""  1   "src/context.rs:465: can not start io on a context that is not configured"
  2024-10-05T16:59:22.227Z    /mainWindow             INFO    ""  "preq"  "background-sync"
  2024-10-05T16:59:22.228Z    /mainWindow             INFO    ""  "main window requested \"background-sync\" permission, but we denied it, because it is not in the list of allowed permissions."
  2024-10-05T16:59:22.249Z    main/tray               INFO    ""  "add icon tray"
  2024-10-05T16:59:22.268Z    renderer/stockstrings   INFO    ""  "loading core translations"
  2024-10-05T16:59:22.277Z    main/menu               INFO    ""  "rebuilding menu with locale en"
  2024-10-05T16:59:22.300Z    core/event              WARNING ""  1   "src/context.rs:465: can not start io on a context that is not configured"
  2024-10-05T16:59:22.363Z    main/state              INFO    ""  "Saving state to /home/user/.var/app/chat.delta.desktop/config/DeltaChat/config.json"
  2024-10-05T16:59:22.365Z    renderer/ScreenController   INFO    ""  "system_info"   {"arch":"64","deltachat_core_version":"v1.142.12","level":"awesome","num_cpus":"8","sqlite_version":"3.45.3"}
  2024-10-05T16:59:22.366Z    renderer/ScreenController   INFO    ""  "account_info"  {"arch":"64","authserv_id_candidates":"","bcc_self":"1","blobdir":"/home/user/.var/app/chat.delta.desktop/config/DeltaChat/accounts/cccdf93f-a84b-4f96-99c1-08c0765eea65/dc.db-blobs","bot":"0","configured_inbox_folder":"INBOX","configured_mvbox_folder":"<unset>","configured_sentbox_folder":"<unset>","configured_trash_folder":"<unset>","database_dir":"/home/user/.var/app/chat.delta.desktop/config/DeltaChat/accounts/cccdf93f-a84b-4f96-99c1-08c0765eea65/dc.db","database_encrypted":"false","database_version":"117","debug_logging":"0","delete_device_after":"0","delete_server_after":"0","delete_to_trash":"<unset>","deltachat_core_version":"v1.142.12","disable_idle":"false","displayname":"0","download_limit":"0","e2ee_enabled":"1","entered_account_settings":"unset imap:unset:0:unset:0:Automatic:AUTH_NORMAL smtp:unset:0:unset:0:Automatic:AUTH_NORMAL cert_automatic","fetch_existing_msgs":"0","fetched_existing_msgs":"true","fingerprint":"<key failure: No self addr configured>","fix_is_chatmail":"false","folders_configured":"0","gossip_period":"172800","is_chatmail":"false","is_configured":"0","is_muted":"false","journal_mode":"wal","key_gen_type":"0","last_cant_decrypt_outgoing_msgs":"0","last_housekeeping":"0","last_msg_id":"0","level":"awesome","mdns_enabled":"1","media_quality":"0","messages_in_contact_requests":"0","mvbox_move":"1","num_cpus":"8","number_of_chat_messages":"0","number_of_chats":"0","number_of_contacts":"0","only_fetch_mvbox":"0","private_key_count":"0","public_key_count":"0","quota_exceeding":"0","save_mime_headers":"false","scan_all_folders_debounce_secs":"60","secondary_addrs":"","selfavatar":"<unset>","sentbox_watch":"0","show_emails":"2","sign_unencrypted":"0","socks5_enabled":"0","sqlite_version":"3.45.3","sync_msgs":"1","uptime":"0h 0m 0s","used_account_settings":"unset imap:unset:0:unset:0:Automatic:AUTH_NORMAL smtp:unset:0:unset:0:Automatic:AUTH_NORMAL cert_automatic","verified_one_on_one_chats":"true","webrtc_instance":"<unset>","webxdc_realtime_enabled":"false"}
  2024-10-05T16:59:22.367Z    core/event              INFO    ""  1   "src/chat.rs:4361: Device-message changelog-version-1.46.0-version1 already added."
  2024-10-05T16:59:27.568Z    main/menu               INFO    ""  "rebuilding menu with locale en"
  2024-10-05T16:59:29.328Z    main/menu               INFO    ""  "rebuilding menu with locale en"
  2024-10-05T16:59:30.721Z    /mainWindow             INFO    ""  "preq"  "media"
  2024-10-05T16:59:30.722Z    /mainWindow             INFO    ""  "preq"  "speaker-selection"
  2024-10-05T16:59:30.722Z    /mainWindow             INFO    ""  "main window requested \"speaker-selection\" permission, but we denied it, because it is not in the list of allowed permissions."
  2024-10-05T16:59:30.722Z    /mainWindow             INFO    ""  "preq"  "media"
  2024-10-05T16:59:30.887Z    /mainWindow             INFO    ""  "preq"  "media"
  2024-10-05T16:59:30.887Z    /mainWindow             INFO    ""  "preq"  "media"
  2024-10-05T16:59:30.922Z    /mainWindow             INFO    ""  "preq"  "media"
  2024-10-05T16:59:30.923Z    /mainWindow             INFO    ""  "preq"  "media"
  2024-10-05T16:59:30.924Z    /mainWindow             INFO    ""  "preq"  "media"
  2024-10-05T16:59:30.924Z    /mainWindow             INFO    ""  "preq"  "media"
  2024-10-05T16:59:31.225Z    /mainWindow             INFO    ""  "preq"  "media"
  2024-10-05T16:59:31.227Z    /mainWindow             INFO    ""  "preq"  "media"
  2024-10-05T16:59:31.262Z    /mainWindow             INFO    ""  "preq"  "media"
  2024-10-05T16:59:31.263Z    /mainWindow             INFO    ""  "preq"  "media"
  2024-10-05T16:59:31.299Z    /mainWindow             INFO    ""  "preq"  "media"
  2024-10-05T16:59:31.563Z    /mainWindow             INFO    ""  "preq"  "media"
  2024-10-05T17:02:00.534Z    main/index              INFO    ""  "Starting app shutdown process"

[link2xt]

Likely a duplicate of https://github.com/deltachat/deltachat-desktop/issues/4171, flatpak as well

[ivkrotova]

Everything started working after turning off the VPN on both devices (desktop and mobile)