Arch Linux

Description:
Since some days SDDM shows only a black screen and it silently crashes. I cannot figure out what is going wrong, I wish I would know at least the package that broke SDDM.

Additional info:
- Linux 4.10.3
- SDDM 0.14
- Qt 5.8
- Mesa 17.0.2 modeset driver for a Intel 5500 graphic (Dell XPS 13 9343)

Steps to reproduce:
- Start your computer with SDDM

Here my logs from systemd starting SDDM:
Mär 26 18:16:55 notebook systemd[1]: Started Simple Desktop Display Manager.
Mär 26 18:16:55 notebook sudo[1410]: pam_unix(sudo:session): session closed for user root
Mär 26 18:16:55 notebook sddm[1413]: Initializing...
Mär 26 18:16:55 notebook sddm[1413]: Starting...
Mär 26 18:16:55 notebook sddm[1413]: Adding new display on vt 1 ...
Mär 26 18:16:55 notebook sddm[1413]: Display server starting...
Mär 26 18:16:55 notebook sddm[1413]: Running: /usr/bin/X -nolisten tcp -auth /var/run/sddm/{9b3a246b-84fa-464a-965d-cb6b51ebdc9a} -background none -noreset -displayfd 18 vt1
Mär 26 18:16:55 notebook sddm[1413]: Running display setup script "/usr/share/sddm/scripts/Xsetup"
Mär 26 18:16:55 notebook sddm[1413]: Display server started.
Mär 26 18:16:55 notebook sddm[1413]: Socket server starting...
Mär 26 18:16:55 notebook sddm[1413]: Socket server started.
Mär 26 18:16:55 notebook sddm[1413]: Greeter starting...
Mär 26 18:16:55 notebook sddm[1413]: Adding cookie to "/var/run/sddm/{9b3a246b-84fa-464a-965d-cb6b51ebdc9a}"
Mär 26 18:16:55 notebook sddm-helper[1424]: [PAM] Starting...
Mär 26 18:16:55 notebook sddm-helper[1424]: [PAM] Authenticating...
Mär 26 18:16:55 notebook sddm-helper[1424]: [PAM] returning.
Mär 26 18:16:55 notebook sddm-helper[1424]: pam_unix(sddm-greeter:session): session opened for user sddm by (uid=0)
Mär 26 18:16:55 notebook systemd[1]: Created slice User Slice of sddm.
Mär 26 18:16:55 notebook systemd[1]: Starting User Manager for UID 618...
Mär 26 18:16:55 notebook systemd-logind[415]: New session c6 of user sddm.
Mär 26 18:16:55 notebook systemd[1]: Started Session c6 of user sddm.
Mär 26 18:16:55 notebook systemd[1426]: pam_unix(systemd-user:session): session opened for user sddm by (uid=0)
Mär 26 18:16:55 notebook systemd[1426]: Reached target Timers.
Mär 26 18:16:55 notebook systemd[1426]: Reached target Paths.
Mär 26 18:16:55 notebook systemd[1426]: Starting D-Bus User Message Bus Socket.
Mär 26 18:16:55 notebook systemd[1426]: Listening on Sound System.
Mär 26 18:16:55 notebook systemd[1426]: Listening on D-Bus User Message Bus Socket.
Mär 26 18:16:55 notebook systemd[1426]: Reached target Sockets.
Mär 26 18:16:55 notebook systemd[1426]: Reached target Basic System.
Mär 26 18:16:55 notebook systemd[1426]: Starting Update XDG user dir configuration...
Mär 26 18:16:55 notebook systemd[1426]: Started Update XDG user dir configuration.
Mär 26 18:16:55 notebook systemd[1426]: Reached target Default.
Mär 26 18:16:55 notebook systemd[1426]: Startup finished in 12ms.
Mär 26 18:16:55 notebook systemd[1]: Started User Manager for UID 618.
Mär 26 18:16:55 notebook sddm[1413]: Greeter session started successfully
Mär 26 18:16:55 notebook sddm-greeter[1433]: High-DPI autoscaling Enabled
Mär 26 18:16:55 notebook sddm-greeter[1433]: Reading from "/usr/share/xsessions/kodi.desktop"
Mär 26 18:16:55 notebook sddm-greeter[1433]: Reading from "/usr/share/xsessions/openbox-kde.desktop"
Mär 26 18:16:55 notebook sddm-greeter[1433]: Reading from "/usr/share/xsessions/openbox.desktop"
Mär 26 18:16:55 notebook sddm-greeter[1433]: Reading from "/usr/share/xsessions/plasma.desktop"
Mär 26 18:16:55 notebook sddm-greeter[1433]: Reading from "/usr/share/xsessions/xbmc.desktop"
Mär 26 18:16:55 notebook sddm-greeter[1433]: Reading from "/usr/share/wayland-sessions/plasmawayland.desktop"
Mär 26 18:16:55 notebook sddm-greeter[1433]: Connected to the daemon.
Mär 26 18:16:55 notebook sddm[1413]: Message received from greeter: Connect
Mär 26 18:16:55 notebook sddm-greeter[1433]: Could not initialize GLX
Mär 26 18:16:55 notebook systemd[1]: Started Process Core Dump (PID 1435/UID 0).
Mär 26 18:16:55 notebook sddm-helper[1424]: [PAM] Closing session
Mär 26 18:16:55 notebook sddm-helper[1424]: pam_unix(sddm-greeter:session): session closed for user sddm
Mär 26 18:16:55 notebook sddm-helper[1424]: [PAM] Ended.
Mär 26 18:16:55 notebook systemd[1427]: pam_unix(systemd-user:session): session closed for user sddm
Mär 26 18:16:55 notebook sddm[1413]: Auth: sddm-helper exited with 6
Mär 26 18:16:55 notebook sddm[1413]: Greeter stopped.
Mär 26 18:16:55 notebook systemd-logind[415]: Removed session c6.
Mär 26 18:16:55 notebook systemd[1]: Stopping User Manager for UID 618...
Mär 26 18:16:55 notebook systemd[1426]: Stopped target Default.
Mär 26 18:16:55 notebook systemd[1426]: Stopped target Basic System.
Mär 26 18:16:55 notebook systemd[1426]: Stopped target Sockets.
Mär 26 18:16:55 notebook systemd[1426]: Closed Sound System.
Mär 26 18:16:55 notebook systemd[1426]: Closed D-Bus User Message Bus Socket.
Mär 26 18:16:55 notebook systemd[1426]: Reached target Shutdown.
Mär 26 18:16:55 notebook systemd[1426]: Starting Exit the Session...
Mär 26 18:16:55 notebook systemd[1426]: Stopped target Paths.
Mär 26 18:16:55 notebook systemd[1426]: Stopped target Timers.
Mär 26 18:16:55 notebook systemd[1426]: Received SIGRTMIN+24 from PID 1440 (kill).
Mär 26 18:16:55 notebook systemd[1]: Stopped User Manager for UID 618.
Mär 26 18:16:55 notebook systemd[1]: Removed slice User Slice of sddm.
Mär 26 18:16:55 notebook systemd-coredump[1437]: Process 1433 (sddm-greeter) of user 618 dumped core.

Stack trace of thread 1433:
#0 0x00007f5a0138ea10 raise (libc.so.6)
#1 0x00007f5a0139013a abort (libc.so.6)
#2 0x00007f5a01d31e21 _ZNK14QMessageLogger5fatalEPKcz (libQt5Core.so.5)
#3 0x00007f59f5ce6faf n/a (libqxcb-glx-integration.so)
#4 0x00007f59f5ce4bb7 n/a (libqxcb-glx-integration.so)
#5 0x00007f59f9d67721 _ZNK15QXcbIntegration27createPlatformOpenGLContextEP14QOpenGLContext (libQt5XcbQpa.so.5)
#6 0x00007f5a024b060d _ZN14QOpenGLContext6createEv (libQt5Gui.so.5)
#7 0x00007f59f5ce7750 n/a (libqxcb-glx-integration.so)
#8 0x00007f59f5ce7931 n/a (libqxcb-glx-integration.so)
#9 0x00007f5a039fe22b _ZN13QSGRenderLoop8instanceEv (libQt5Quick.so.5)
#10 0x00007f5a03a63889 _ZN19QQuickWindowPrivate4initEP12QQuickWindowP19QQuickRenderControl (libQt5Quick.so.5)
#11 0x00007f5a03ae75ed _ZN10QQuickViewC1EP7QWindow (libQt5Quick.so.5)
#12 0x0000000000430cb7 _ZN4SDDM10GreeterApp16addViewForScreenEP7QScreen (sddm-greeter)
#13 0x000000000043224b _ZN4SDDM10GreeterAppC2ERiPPc (sddm-greeter)
#14 0x0000000000416537 main (sddm-greeter)
#15 0x00007f5a0137b511 __libc_start_main (libc.so.6)
#16 0x000000000041667a _start (sddm-greeter)

Stack trace of thread 1434:
#0 0x00007f5a0143d67d poll (libc.so.6)
#1 0x00007f5a0366d8e0 n/a (libxcb.so.1)
#2 0x00007f5a0366f679 xcb_wait_for_event (libxcb.so.1)
#3 0x00007f59f9d61239 n/a (libQt5XcbQpa.so.5)
#4 0x00007f5a01d4b6d8 n/a (libQt5Core.so.5)
#5 0x00007f59ffaa72e7 start_thread (libpthread.so.0)
#6 0x00007f5a0144754f __clone (libc.so.6)