After logout via start menu, the display goes dark but never launches sddm afterwards. Also switching to other VT doesn't work anymore. You have to hard reset the machine. In the hung up state I observed the following: a) initiating a ssh connection to the machine doesn't work anymore, but b) if there was already a ssh connection beforehand, you can still use it fully and I ran some commands, which could help solving this issue: Commands: w, ps aux | grep sddm, ps aux | grep wayland, systemctl status sddm.service Before logout attempt: https://paste.kde.org/p73u3wypo In locked up state: https://paste.kde.org/pw0gj3v5b Kernel log: dmesg (!) https://paste.kde.org/pkfxfqtu0 Reproducible: Always Steps to Reproduce: 1. Launch Wayland session 2. Try to logout from session
I have seen the problem as well, though when starting directly from vt doesn't cause the issue. Does a restart of sddm (through ssh) fix the issue?
After issuing "systemctl restart sddm" the terminal login-prompt on tty2 is displayed and you can login. But switching to other terminals via Ctrl+Alt+Fx is not possible.
For comparision command output in X session: Before logout: https://paste.kde.org/p6u7ubyy5 After logout: https://paste.kde.org/pjnfy00lm A difference I noticed in the logs: In the Wayland case, the sddm-helper doesn't exit and the Greeter doesn't get stopped in the "Before logout" state. This happens instead on logout (with restart). And in Wayland it tries to create a new vt7, but that's probably meant this way, since the Wayland session doesn't take over vt7. In this context: In the Wayland case after logout the jump to vt2 in the sddm.service logs is difficult to understand. sddm is on vt7 and Wayland was on vt8.
This I think is partly related to https://bugs.kde.org/show_bug.cgi?id=355920 as well..
I've been having this mostly on my virtualbox vm install but i thought it was a virtualbox issue. On my main system, well wayland is too "unstable" on it so i gave it a pass, until now.
kwin terminates correctly when this happens, but sddm-greeter crashes. martin@martin-yoga:~$ sudo coredumpctl info sddm-greeter PID: 1122 (sddm-greeter) UID: 118 (sddm) GID: 125 (sddm) Signal: 11 (SEGV) Timestamp: Tue 2016-11-22 14:58:52 CET (2min 43s ago) Command Line: /usr/bin/sddm-greeter --socket /tmp/sddm-:0-LjVbeT --theme /usr/share/sddm/themes/breeze Executable: /usr/bin/sddm-greeter Control Group: /user.slice/user-118.slice/session-1.scope Unit: session-1.scope Slice: user-118.slice Session: 1 Owner UID: 118 (sddm) Boot ID: bf095df81ada4eb78dee3d8467781782 Machine ID: a8007ac462c5459ba22c27c597e11401 Hostname: martin-yoga Coredump: /var/lib/systemd/coredump/core.sddm-greeter.118.bf095df81ada4eb78dee3d8467781782.1122.1479823132000000000000.xz Message: Process 1122 (sddm-greeter) of user 118 dumped core. Stack trace of thread 1122: #0 0x00007fb5778f7ac0 n/a (libKF5CoreAddons.so.5) #1 0x00007fb5778f1fc6 n/a (libKF5CoreAddons.so.5) #2 0x00007fb5778f230f _ZN9KDirWatchD1Ev (libKF5CoreAddons.so.5) #3 0x00007fb5778f2329 n/a (libKF5CoreAddons.so.5) #4 0x00007fb58f014ff8 __run_exit_handlers (libc.so.6) #5 0x00007fb58f015045 __GI_exit (libc.so.6) #6 0x00007fb58a20cac5 _XDefaultIOError (libX11.so.6) #7 0x00007fb59115160e ioErrorHandler (/usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5.7.0) #8 0x00007fb58a20ccee _XIOError (libX11.so.6) #9 0x00007fb58a209fb2 n/a (libX11.so.6) #10 0x00007fb58a20a7e9 _XFlush (libX11.so.6) #11 0x00007fb58a20d385 _XGetRequest (libX11.so.6) #12 0x00007fb58a1edafc XFreePixmap (libX11.so.6) #13 0x00007fb58d26dff1 n/a (libGL.so.1) #14 0x00007fb5912f4fe6 _ZN11QGLXPbufferC2EP17QOffscreenSurface (/usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so) #15 0x00007fb5912f3963 _ZNK18QXcbGlxIntegration30createPlatformOffscreenSurfaceEP17QOffscreenSurface (/usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so) #16 0x00007fb59115a131 _ZNK15QXcbIntegration30createPlatformOffscreenSurfaceEP17QOffscreenSurface (/usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5.7.0) #17 0x00007fb58ff20a3e _ZN17QOffscreenSurface6createEv (libQt5Gui.so.5) #18 0x00007fb590e5e127 n/a (libQt5Quick.so.5) #19 0x00007fb590e5d630 _ZN13QSGRenderLoop7cleanupEv (libQt5Quick.so.5) #20 0x00007fb58fbc227e _Z21qt_call_post_routinesv (libQt5Core.so.5) #21 0x00007fb58fbc465c _ZN16QCoreApplicationD2Ev (libQt5Core.so.5) #22 0x0000000000416278 main (sddm-greeter)