System is running: Artix-Linux
Insync installed via: AUR
Multiple other QT applications are working just fine including their OpenGL parts.
I have exhaustively googled the issue. GLXgears works just fine, of course.
Starting Insync normally reveals only a white screen. Running with --no-daemon mode reveals the error.
bash-5.1$ insync start --no-daemon
** (process:12257): WARNING **: 03:11:48.104: Failed to load shared library 'libnotify.so.4' referenced by the typelib: /usr/lib/libgdk_pixbuf-2.0.so.0: undefined symbol: g_task_set_name
QXcbIntegration: Cannot create platform OpenGL context, neither GLX nor EGL are enabled
QApplication: invalid style override passed, ignoring it.
Available styles: Windows, Fusion
INFO 2022-03-24 03:11:48,317 [mainlogs:_log_run:139] Core(app_version=3.7.3.50326, platform=Linux-x86_64-artix/rolling) initialized
WARNING 2022-03-24 03:11:48,501 [base_events:_run_once:1771] Executing <Task finished coro=<SettingsMain._load_settings() done, defined at ideskcore/mainsettings.py:179> result=None created at ideskcore/mainsettings.py:157> took 0.173 seconds
/usr/lib/gvfs/libgvfscommon.so: undefined symbol: g_task_set_name
Failed to load module: /usr/lib/gio/modules/libgvfsdbus.so
INFO 2022-03-24 03:11:49,137 [inotify_manager:__init__:132] INotifyManager FS_ENCODING: utf-8
INFO 2022-03-24 03:11:49,138 [fswatcher:_start:57] LinuxFSWatcher._start
INFO 2022-03-24 03:11:49,139 [inotify_manager:_pull_loop:319] Inotify loop enter
WebEngineContext used before QtWebEngine::initialize() or OpenGL context creation failed.
Fontconfig warning: "/usr/share/fontconfig/conf.avail/05-reset-dirs-sample.conf", line 6: unknown element "reset-dirs"
INFO 2022-03-24 03:11:49,342 [fswatcher:watch:77] watch origin: /home/black/gdrive
INFO 2022-03-24 03:11:49,353 [main:start_core:49] core started
INFO 2022-03-24 03:11:49,355 [unix_socket_server:start:93] unix socket server thread start