After launching the AppImage above from Dolphin, the app appears to launch (i.e., is visible on the task bar) but then exits. No interface is ever presented.
GTK3 (1:3.24.52-1.1) and GTK4 (1:4.20.4-1.1) are installed as part the base installation. Rust (1:1.94.1-1.1) is also installed.
From journalctl, the following logs are typical and reproducible.
Apr 07 18:27:22 acerpaddy systemd[1081]: Started /home/pnhughes/Downloads/cook-sync_0.9.6_x86_64.AppImage.
Apr 07 18:27:22 acerpaddy zenity[6783]: Using GtkSettings:gtk-application-prefer-dark-theme with libadwaita is unsupported. Please use AdwStyleManager:color-scheme instead.
Apr 07 18:27:22 acerpaddy kioworker[6739]: "Could not load plugin from /usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: Cannot load library /usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: libappimage.so.1.0: cannot open shared object file: No such file or directory"
Apr 07 18:27:22 acerpaddy kioworker[6739]: "Could not load plugin from /usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: Cannot load library /usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: libappimage.so.1.0: cannot open shared object file: No such file or directory"
Apr 07 18:27:23 acerpaddy kioworker[6801]: "Could not load plugin from /usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: Cannot load library /usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: libappimage.so.1.0: cannot open shared object file: No such file or directory"
Apr 07 18:27:27 acerpaddy cook-sync_0.9.6_x86_64.AppImage[6753]: [2026-04-07 18:27:27] INFO First run detected, showing welcome screen
Apr 07 18:27:27 acerpaddy cook-sync_0.9.6_x86_64.AppImage[6753]: xkbcommon: ERROR: /usr/share/X11/locale/en_US.UTF-8/Compose:1661:1: unrecognized keysym "dead_hamza" on left-hand side
Apr 07 18:27:27 acerpaddy cook-sync_0.9.6_x86_64.AppImage[6753]: xkbcommon: ERROR: /usr/share/X11/locale/en_US.UTF-8/Compose:1662:1: unrecognized keysym "dead_hamza" on left-hand side
Apr 07 18:27:27 acerpaddy cook-sync_0.9.6_x86_64.AppImage[6753]: xkbcommon: ERROR: /usr/share/X11/locale/en_US.UTF-8/Compose:1663:1: unrecognized keysym "dead_hamza" on left-hand side
Apr 07 18:27:27 acerpaddy cook-sync_0.9.6_x86_64.AppImage[6753]: xkbcommon: ERROR: /usr/share/X11/locale/en_US.UTF-8/Compose:1664:1: unrecognized keysym "dead_hamza" on left-hand side
Apr 07 18:27:27 acerpaddy cook-sync_0.9.6_x86_64.AppImage[6753]: xkbcommon: ERROR: /usr/share/X11/locale/en_US.UTF-8/Compose:1665:1: unrecognized keysym "dead_hamza" on left-hand side
Apr 07 18:27:27 acerpaddy cook-sync_0.9.6_x86_64.AppImage[6753]: [2026-04-07 18:27:27] ERROR Exiting because of error: Found no glutin configs matching the template: ConfigTemplate { color_buffer_type: Rgb { r_size: 8, g_size: 8, b_size: 8 }, alpha_size: 8, depth_size: 0, stencil_size: 0, num_samples: None, min_swap_interval: None, max_swap_interval: None, config_surface_types: ConfigSurfaceTypes(WINDOW), api: None, transparency: false, single_buffering: false, stereoscopy: None, float_pixels: false, max_pbuffer_width: None, hardware_accelerated: None, max_pbuffer_height: None, native_window: None }. Error: provided display handle is not supported
Apr 07 18:27:27 acerpaddy cook-sync_0.9.6_x86_64.AppImage[6753]: Error: Other("Found no glutin configs matching the template: ConfigTemplate { color_buffer_type: Rgb { r_size: 8, g_size: 8, b_size: 8 }, alpha_size: 8, depth_size: 0, stencil_size: 0, num_samples: None, min_swap_interval: None, max_swap_interval: None, config_surface_types: ConfigSurfaceTypes(WINDOW), api: None, transparency: false, single_buffering: false, stereoscopy: None, float_pixels: false, max_pbuffer_width: None, hardware_accelerated: None, max_pbuffer_height: None, native_window: None }. Error: provided display handle is not supported")
Apr 07 18:27:27 acerpaddy systemd[1081]: app-\x2fhome\x2fpnhughes\x2fDownloads\x2fcook\x2dsync_0.9.6_x86_64.AppImage@3995350fc3a84102b3b163612d44984d.service: Main process exited, code=exited, status=1/FAILURE
Apr 07 18:27:27 acerpaddy systemd[1]: tmp-.mount_cook\x2dsjaHIIJ.mount: Deactivated successfully.
Apr 07 18:27:27 acerpaddy systemd[1081]: app-\x2fhome\x2fpnhughes\x2fDownloads\x2fcook\x2dsync_0.9.6_x86_64.AppImage@3995350fc3a84102b3b163612d44984d.service: Failed with result 'exit-code'.
Apr 07 18:27:27 acerpaddy systemd[1081]: app-\x2fhome\x2fpnhughes\x2fDownloads\x2fcook\x2dsync_0.9.6_x86_64.AppImage@3995350fc3a84102b3b163612d44984d.service: Consumed 2.179s CPU time over 5.148s wall clock time, 228.1M memory peak.
DE: KDE Plasma 6.6.3
WM: KWin (Wayland)
CPU: AMD Ryzen 5 5500U (12) @ 4.06 GHz
GPU: AMD Lucienne [Integrated]
After launching the AppImage above from Dolphin, the app appears to launch (i.e., is visible on the task bar) but then exits. No interface is ever presented.
GTK3 (1:3.24.52-1.1) and GTK4 (1:4.20.4-1.1) are installed as part the base installation. Rust (1:1.94.1-1.1) is also installed.
From journalctl, the following logs are typical and reproducible.