Signal 7.3.0 Won't launch as Wayland Client

[sfalken]

When launching org.signal.Signal as a Wayland Client, it fails with the following Error:

[sfalken@mustang ~]$ SIGNAL_USE_WAYLAND=1 flatpak run org.signal.Signal
Debug: Will run signal with the following arguments:
Debug: Additionally, user gave: 
Set Windows Application User Model ID (AUMID) { AUMID: 'org.whispersystems.signal-desktop' }
NODE_ENV production
NODE_CONFIG_DIR /app/Signal/resources/app.asar/config
NODE_CONFIG {}
ALLOW_CONFIG_MUTATIONS undefined
HOSTNAME mustang
NODE_APP_INSTANCE undefined
SUPPRESS_NO_CONFIG_WARNING undefined
SIGNAL_ENABLE_HTTP undefined
userData: /home/sfalken/.var/app/org.signal.Signal/config/Signal
config/get: Successfully read user config file
config/get: Successfully read ephemeral config file
making app single instance
LaunchProcess: failed to execvp:
xdg-settings
LaunchProcess: failed to execvp:
xdg-settings
[2:0322/134755.528752:ERROR:ozone_platform_x11.cc(244)] Missing X server or $DISPLAY
[2:0322/134755.528791:ERROR:env.cc(257)] The platform failed to initialize.  Exiting.

Operating System: openSUSE Kalpa
Flatpak Version: 1.15.6
Desktop: KDE Plasma 6.0.2

[bermeitinger-b]

While I don't know for sure, could you try setting the variable with e.g. flatseal inside the application?

[sfalken]

Setting SIGNAL_USE_WAYLAND=1 in kcm_flatpak results in the flatpak launching, but no window is drawn.

[sfalken]

[sfalken@mustang ~]$ flatpak override --user --show org.signal.Signal
[Environment]
SIGNAL_USE_WAYLAND=1
[sfalken@mustang ~]$ flatpak run org.signal.Signal
Debug: Will run signal with the following arguments: --enable-features=WaylandWindowDecorations --ozone-platform=wayland
Debug: Additionally, user gave: 
Set Windows Application User Model ID (AUMID) { AUMID: 'org.whispersystems.signal-desktop' }
NODE_ENV production
NODE_CONFIG_DIR /app/Signal/resources/app.asar/config
NODE_CONFIG {}
ALLOW_CONFIG_MUTATIONS undefined
HOSTNAME mustang
NODE_APP_INSTANCE undefined
SUPPRESS_NO_CONFIG_WARNING undefined
SIGNAL_ENABLE_HTTP undefined
userData: /home/sfalken/.var/app/org.signal.Signal/config/Signal
config/get: Successfully read user config file
config/get: Successfully read ephemeral config file
making app single instance
LaunchProcess: failed to execvp:
xdg-settings
LaunchProcess: failed to execvp:
xdg-settings
{"level":30,"time":"2024-03-22T22:20:53.627Z","msg":"got fast localeOverride setting null"}
{"level":30,"time":"2024-03-22T22:20:53.627Z","msg":"app.ready: hour cycle preference: UnknownPreference"}
{"level":30,"time":"2024-03-22T22:20:53.627Z","msg":"app.ready: preferred system locales: en-US, en"}
{"level":30,"time":"2024-03-22T22:20:53.627Z","msg":"locale: Supported locales: af-ZA, ar, az-AZ, bg-BG, bn-BD, bs-BA, ca, cs, da, de, el, en, es, et-EE, eu, fa-IR, fi, fr, ga-IE, gl-ES, gu-IN, he, hi-IN, hr-HR, hu, id, it, ja, ka-GE, kk-KZ, km-KH, kn-IN, ko, ky-KG, lt-LT, lv-LV, mk-MK, ml-IN, mr-IN, ms, my, nb, nl, pa-IN, pl, pt-BR, pt-PT, ro-RO, ru, sk-SK, sl-SI, sq-AL, sr, sv, sw, ta-IN, te-IN, th, tl-PH, tr, ug, uk-UA, ur, vi, yue, zh-CN, zh-HK, zh-Hant"}
{"level":30,"time":"2024-03-22T22:20:53.628Z","msg":"locale: Preferred locales: en-US, en"}
{"level":30,"time":"2024-03-22T22:20:53.628Z","msg":"locale: Locale Override: null"}
{"level":30,"time":"2024-03-22T22:20:53.629Z","msg":"locale: Matched locale: en"}
{"level":40,"time":"2024-03-22T22:20:53.655Z","msg":"intl.onWarn [@formatjs/intl] \"defaultRichTextElements\" was specified but \"message\" was not pre-compiled. \nPlease consider using \"@formatjs/cli\" to pre-compile your messages for performance.\nFor more details see https://formatjs.io/docs/getting-started/message-distribution"}
{"level":30,"time":"2024-03-22T22:20:53.655Z","msg":"locale: Text info direction for en: ltr"}
{"level":30,"time":"2024-03-22T22:20:53.656Z","msg":"app ready"}
{"level":30,"time":"2024-03-22T22:20:53.657Z","msg":"starting version 7.3.0"}
{"level":30,"time":"2024-03-22T22:20:53.657Z","msg":"media access status [object Undefined] [object Undefined]"}
{"level":30,"time":"2024-03-22T22:20:53.658Z","msg":"got fast theme-setting value system"}
{"level":30,"time":"2024-03-22T22:20:53.659Z","msg":"got fast theme-setting value system"}
{"level":30,"time":"2024-03-22T22:20:53.659Z","msg":"got fast spellcheck setting true"}
{"level":30,"time":"2024-03-22T22:20:53.660Z","msg":"getSystemTraySetting had no flags and did no DB lookups. Returning DoNotUseSystemTray"}
{"level":30,"time":"2024-03-22T22:20:53.660Z","msg":"Initializing BrowserWindow config: {\"show\":false,\"width\":800,\"height\":610,\"minWidth\":300,\"minHeight\":200,\"autoHideMenuBar\":false,\"titleBarStyle\":\"default\",\"backgroundColor\":\"#3a76f0\",\"webPreferences\":{\"devTools\":false,\"spellcheck\":true,\"enableBlinkFeatures\":\"CSSPseudoDir,CSSLogical\",\"enablePreferredSizeMode\":true,\"nodeIntegration\":false,\"nodeIntegrationInWorker\":false,\"sandbox\":false,\"contextIsolation\":true,\"preload\":\"[REDACTED]/preload.bundle.js\",\"backgroundThrottling\":true,\"disableBlinkFeatures\":\"Accelerated2dCanvas,AcceleratedSmallCanvases\"},\"icon\":\"[REDACTED]/images/signal-logo-desktop-linux.png\",\"x\":3,\"y\":1534}"}
{"level":30,"time":"2024-03-22T22:20:53.694Z","msg":"spellcheck: user locales: [\"en-US\",\"en\"]"}
{"level":30,"time":"2024-03-22T22:20:53.694Z","msg":"spellcheck: available spellchecker languages: [\"af\",\"bg\",\"ca\",\"cs\",\"cy\",\"da\",\"de\",\"de-DE\",\"el\",\"en\",\"en-AU\",\"en-CA\",\"en-GB\",\"en-GB-oxendict\",\"en-US\",\"es\",\"es-419\",\"es-AR\",\"es-ES\",\"es-MX\",\"es-US\",\"et\",\"fa\",\"fo\",\"fr\",\"fr-FR\",\"he\",\"hi\",\"hr\",\"hu\",\"hy\",\"id\",\"it\",\"it-IT\",\"ko\",\"lt\",\"lv\",\"nb\",\"nl\",\"pl\",\"pt\",\"pt-BR\",\"pt-PT\",\"ro\",\"ru\",\"sh\",\"sk\",\"sl\",\"sq\",\"sr\",\"sv\",\"ta\",\"tg\",\"tr\",\"uk\",\"vi\"]"}
{"level":30,"time":"2024-03-22T22:20:53.694Z","msg":"spellcheck: setting languages to: [\"en-US\",\"en\"]"}
{"level":40,"time":"2024-03-22T22:20:53.694Z","msg":"MainSQL: Database log code=283: recovered 38 frames from WAL file [REDACTED]/sql/db.sqlite-wal"}
{"level":30,"time":"2024-03-22T22:20:53.694Z","msg":"MainSQL: updateSchema:\n  Current user_version: 1000;\n  Most recent db schema: 1000;\n  SQLite version: 3.42.0;\n  SQLCipher version: 4.5.5 community;\n  (deprecated) schema_version: 441;\n"}
{"level":30,"time":"2024-03-22T22:20:54.023Z","msg":"got fast theme-setting value system"}
{"level":30,"time":"2024-03-22T22:20:54.515Z","msg":"got fast spellcheck setting true"}
{"level":30,"time":"2024-03-22T22:20:54.518Z","msg":"System tray service: created"}
{"level":30,"time":"2024-03-22T22:20:54.518Z","msg":"System tray service: updating main window. Previously, there was not a window, and now there is"}
{"level":30,"time":"2024-03-22T22:20:54.518Z","msg":"System tray service: rendering no tray"}
{"level":30,"time":"2024-03-22T22:20:54.519Z","msg":"Begin ensuring permissions"}
{"level":30,"time":"2024-03-22T22:20:54.519Z","msg":"Ensuring file permissions for 4 files"}
{"level":30,"time":"2024-03-22T22:20:54.520Z","msg":"Finish ensuring permissions in 1ms"}
{"level":30,"time":"2024-03-22T22:20:54.642Z","msg":"Prevent display sleep service: allowing display sleep"}
{"level":30,"time":"2024-03-22T22:20:54.642Z","msg":"Background throttling enabled because no call is active"}
{"level":30,"time":"2024-03-22T22:20:54.880Z","msg":"updater/start: Updates disabled - not starting new version checks"}
{"level":30,"time":"2024-03-22T22:20:54.881Z","msg":"App loaded - time: 1225"}
{"level":30,"time":"2024-03-22T22:20:54.882Z","msg":"SQL init - time: 70"}
{"level":30,"time":"2024-03-22T22:20:54.882Z","msg":"Preload - time: 486"}
{"level":30,"time":"2024-03-22T22:20:54.882Z","msg":"WebSocket connect - time: 274"}
{"level":30,"time":"2024-03-22T22:20:54.882Z","msg":"Processed count: 0"}
{"level":30,"time":"2024-03-22T22:20:54.882Z","msg":"Messages per second: 0"}

[akvadrako]

I have the same issue, there is no error message but Signal just exits and no window appears. It was working a few weeks ago. This occurs in both the stable and beta branches. The main difference I see in the logs when using X11 vs wayland is the wayland version is missing these lines:

{"level":30,"time":"2024-04-13T08:49:17.492Z","msg":"main window is ready-to-show"}
{"level":30,"time":"2024-04-13T08:49:17.492Z","msg":"showing main window"}
{"level":30,"time":"2024-04-13T08:49:17.494Z","msg":"System tray service: rendering the tray"}

[Xtrems876]

Setting SIGNAL_USE_WAYLAND=1 in kcm_flatpak results in the flatpak launching, but no window is drawn.

If you also have the option to minimise to tray turned on, Signal will launch without a window but the window will be drawn if Signal is then accessed through the tray icon. This is the case regardless of having the "start minimized" turned on or off.

[sfalken]

Setting SIGNAL_USE_WAYLAND=1 in kcm_flatpak seems to work inconsistently for me, sometimes it launches, sometimes it doesn't, but it works fine when it does launch.