Today I installed via the KDE flatpak testing repository Falkon (master). Falkon does start on Plasma Wayland only via XWayland. I've tested the normal Falkon package in ArchLinux on Wayland and it works great. Is Wayland support missing in the flatpak backend? Flatpak wants to offer additional security via sandboxing, but this doesn't make sense to me if then xcb is used anyway. flatpak run org.kde.falkon --platform=wayland Failed to create wl_display (No such file or directory) qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found. [3:3:0821/232145.470805:INFO:zygote_host_impl_linux.cc(126)] No usable sandbox! Update your kernel or see https://chromium.googlesource.com/chromium/src/+/master/docs/linux_suid_sandbox_development.md for more information on developing with the SUID sandbox. If you want to live dangerously and need an immediate workaround, you can try using --no-sandbox. Falkon: 2 extensions loaded Couldn't start kwalletd: QDBusError("org.freedesktop.DBus.Error.ServiceUnknown", "org.freedesktop.DBus.Error.ServiceUnknown")
Can reproduce Distribution: KDE neon Developer Edition Kernel: 4.15.0-29-generic Plasma: 5.13.80 Apps: 18.11.70 Qt: 5.11.1 Frameworks: 5.48.0 Graphics: Card-1: Intel driver: i915 v: kernel bus ID: 00:02.0 chip ID: 8086:5917 Card-2: NVIDIA GM108M [GeForce 940MX] driver: nouveau v: kernel bus ID: 01:00.0 chip ID: 10de:134d Display: wayland server: X.Org 1.19.6 driver: modesetting,nouveau unloaded: fbdev,vesa alternate: nvidia compositor: kwin wayland resolution: 1920x1080~57Hz OpenGL: renderer: Mesa DRI Intel UHD Graphics 620 (Kabylake GT2) v: 4.5 Mesa 18.0.5 compat-v: 3.0 direct render: Yes
Falkon doesn't seem to have enabled "--socket=wayland" in its manifest. Can you try using "flatpak run --socket=wayland org.kde.falkon -platform wayland"?
If you can provide the information requested in comment #2, please add it.
(In reply to Jan Grulich from comment #2) > Falkon doesn't seem to have enabled "--socket=wayland" in its manifest. Can > you try using "flatpak run --socket=wayland org.kde.falkon -platform > wayland"? Launched Falkon with this options - xwininfo command doesn't indicates that this is an XWayland window
Closing. 1) This is a bug in the package itself 2) We don't have a KDE flatpak platform plugin anymore