sddm

           PID: 671 (sddm)
           UID: 0 (root)
           GID: 0 (root)
        Signal: 6 (ABRT)
     Timestamp: Sat 2018-12-15 02:46:50 MST (14min ago)
  Command Line: /usr/bin/sddm
    Executable: /usr/bin/sddm
 Control Group: /system.slice/sddm.service
          Unit: sddm.service
         Slice: system.slice
       Boot ID: e35db374ad3f402195d119909845aad9
    Machine ID: c834ece3b241491f948b38b995d98f1b
      Hostname: PhonyPC
       Storage: /var/lib/systemd/coredump/core.sddm.0.e35db374ad3f402195d119909845aad9.671.1544867210000000.lz4 (inaccessible)
       Message: Process 671 (sddm) of user 0 dumped core.

                Stack trace of thread 671:
                #0  0x00007f970b711d7f raise (libc.so.6)
                #1  0x00007f970b6fc672 abort (libc.so.6)
                #2  0x00007f970bacd7fc _ZNK14QMessageLogger5fatalEPKcz (libQt5Core.so.5)
                #3  0x000055d28cb641f3 n/a (sddm)
                #4  0x000055d28cba3c2e _ZN4SDDM4Seat13createDisplayEi (sddm)
                #5  0x000055d28cba3e72 _ZN4SDDM4SeatC2ERK7QStringP7QObject (sddm)
                #6  0x000055d28cba5e41 _ZN4SDDM11SeatManager10createSeatERK7QString (sddm)
                #7  0x000055d28cba6c62 n/a (sddm)
                #8  0x00007f970bcee3e0 _ZN11QMetaObject8activateEP7QObjectiiPPv (libQt5Core.so.5)
                #9  0x000055d28cba4eb0 _ZN4SDDM10LogindSeat19canGraphicalChangedEb (sddm)
                #10 0x000055d28cba51c3 n/a (sddm)
                #11 0x00007f970bcee3e0 _ZN11QMetaObject8activateEP7QObjectiiPPv (libQt5Core.so.5)
                #12 0x00007f970c6c9980 _ZN23QDBusPendingCallWatcher8finishedEPS_ (libQt5DBus.so.5)
                #13 0x00007f970c6c9a81 n/a (libQt5DBus.so.5)
                #14 0x00007f970bceeb62 _ZN7QObject5eventEP6QEvent (libQt5Core.so.5)
                #15 0x00007f970bcc38d7 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5)
                #16 0x00007f970bcc6998 _ZN23QCoreApplicationPrivate16sendPostedEventsEP7QObjectiP11QThreadData (libQt5Core.so.5)
                #17 0x00007f970bd19fd4 n/a (libQt5Core.so.5)
                #18 0x00007f970a5fa3cf g_main_context_dispatch (libglib-2.0.so.0)
                #19 0x00007f970a5fbf89 n/a (libglib-2.0.so.0)
                #20 0x00007f970a5fbfce g_main_context_iteration (libglib-2.0.so.0)
                #21 0x00007f970bd195a9 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5)
                #22 0x00007f970bcc258c _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5)
                #23 0x00007f970bcca896 _ZN16QCoreApplication4execEv (libQt5Core.so.5)
                #24 0x000055d28cb67b0a main (sddm)
                #25 0x00007f970b6fe223 __libc_start_main (libc.so.6)
                #26 0x000055d28cb67e0a _start (sddm)

                Stack trace of thread 672:
                #0  0x00007f970b7cac21 __poll (libc.so.6)
                #1  0x00007f970a5fbee0 n/a (libglib-2.0.so.0)
                #2  0x00007f970a5fbfce g_main_context_iteration (libglib-2.0.so.0)
                #3  0x00007f970bd195a9 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5)
                #4  0x00007f970bcc258c _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5)
                #5  0x00007f970bb065c9 _ZN7QThread4execEv (libQt5Core.so.5)
                #6  0x00007f970c66dba6 n/a (libQt5DBus.so.5)
                #7  0x00007f970bb079cc n/a (libQt5Core.so.5)
                #8  0x00007f970b6c0a9d start_thread (libpthread.so.0)
                #9  0x00007f970b7d5b23 __clone (libc.so.6)