Created attachment 144568 [details] startplasma-wayland failure SUMMARY Wayland session does not start from SDDM or from cmdline. STEPS TO REPRODUCE 1. from SDDM select Wayland session 2. login OBSERVED RESULT After many attempt with a black screen, it's back to SDDM. EXPECTED RESULT I'm logged on a running Wayland session. SOFTWARE/OS VERSIONS Operating System: Gentoo Linux KDE Plasma Version: 5.23.4 KDE Frameworks Version: 5.89.0 Qt Version: 5.15.2 Kernel Version: 5.15.8-gentoo-x86_64 (64-bit) Graphics Platform: X11 Processors: 8 × Intel® Core™ i7-9700K CPU @ 3.60GHz Memory: 31.3 Gio of RAM Graphics Processor: NVIDIA GeForce GTX 1660 Ti/PCIe/SSE2 ADDITIONAL INFORMATION Here is the .local/share/sddm/wayland-session.log No backend specified through command line argument, trying auto resolution kwin_xkbcommon: XKB: /usr/share/X11/locale/en_US.UTF-8/Compose:5089:46: this compose sequence is a duplicate of another; skipping line kwin_xkbcommon: XKB: /usr/share/X11/locale/en_US.UTF-8/Compose:5091:48: this compose sequence is a duplicate of another; skipping line kwin_xkbcommon: XKB: /usr/share/X11/locale/en_US.UTF-8/Compose:5093:48: this compose sequence is a duplicate of another; skipping line kwin_xkbcommon: XKB: /usr/share/X11/locale/en_US.UTF-8/Compose:5097:47: this compose sequence is a duplicate of another; skipping line kwin_xkbcommon: XKB: /usr/share/X11/locale/en_US.UTF-8/Compose:5099:46: this compose sequence is a duplicate of another; skipping line kwin_xkbcommon: XKB: /usr/share/X11/locale/en_US.UTF-8/Compose:5107:48: this compose sequence is a duplicate of another; skipping line kwin_xkbcommon: XKB: /usr/share/X11/locale/en_US.UTF-8/Compose:5111:46: this compose sequence is a duplicate of another; skipping line kwin_xkbcommon: XKB: /usr/share/X11/locale/en_US.UTF-8/Compose:5113:46: this compose sequence is a duplicate of another; skipping line kwin_xkbcommon: XKB: /usr/share/X11/locale/en_US.UTF-8/Compose:5117:45: this compose sequence is a duplicate of another; skipping line kwin_xkbcommon: XKB: /usr/share/X11/locale/en_US.UTF-8/Compose:5120:46: this compose sequence is a duplicate of another; skipping line Filter multi-plane format 842093913 Filter multi-plane format 842094158 Filter multi-plane format 825382478 Filter multi-plane format 909203022 Filter multi-plane format 875714126 kwin_wayland_drm: Could not create gbm surface! Aucun fichier ou dossier de ce type kwin_wayland_drm: Could not create gbm surface! Aucun fichier ou dossier de ce type kwin_wayland_drm: Creating GBM surface failed: Aucun fichier ou dossier de ce type startplasmacompositor: Shutting down... startplasmacompositor: Done. And if I try starting it with startplasma-wayland, you can find what happens in attachment.
I believe it should be fixed with https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14049 It would be great if somebody running mesa from git master could confirm that this issue is indeed fixed.
Sorry for the delay, but I managed to try again using mesa 21.3.3, that contains the needed commit. Now, the session is running, yes! But… plasmashell seems frozen, no panel available, it crashes, then a panel appears but frozen also. Still, I'm able to run some applications without problem (Konsole, Firefox, Dolphin, etc.) using shortcuts. Only plasmashell is not happy (I did not found anything else yet).
>Now, the session is running, yes! Then this bug is fixed, talking of any other issues only muddies the issue.
Yes of course, I will create another bug, that was the plan (Now, I need time to do it!).