Bug 1648880

Description of problem:
I am using lightdm. When I launch my XFCE session, it won't come up, instead an error message is shown: "Unable to contact settings server" and lightdm gets restarted.

I was able to observe that /run/user/1000 is owned by root, which sounds odd.

There is also this segfault from startxfce4:

Stack trace of thread 3338:                                                                                                                                                                                        #0  0x0000560bab8d4a94 xfsm_manager_get_shutdown_type (xfce4-session)                                                                                                                                              #1  0x0000560bab8c7cdd n/a (xfce4-session)                                                                                                                                                                         #2  0x00007fc23c995816 n/a (libgio-2.0.so.0)                                                                                                                                                                       #3  0x00007fc23c995c20 n/a (libgio-2.0.so.0)                                                                                                                                                                       #4  0x00007fc23c959f74 n/a (libgio-2.0.so.0)                                                                                                                                                                       #5  0x00007fc23c95a8d6 n/a (libgio-2.0.so.0)                                                                                                                                                                       #6  0x00007fc23c988415 n/a (libgio-2.0.so.0)                                                                                                                                                                       
#7  0x00007fc23c959f74 n/a (libgio-2.0.so.0)                                                                                                                                                                       #8  0x00007fc23c959fad n/a (libgio-2.0.so.0)                                                                                                                                                                       #9  0x00007fc23c79db7b n/a (libglib-2.0.so.0)                                                                                                                                                                      #10 0x00007fc23c7a126d g_main_context_dispatch (libglib-2.0.so.0)                                                                                                                                                  #11 0x00007fc23c7a1638 n/a (libglib-2.0.so.0)                                                                                                                                                                      #12 0x00007fc23c7a1962 g_main_loop_run (libglib-2.0.so.0)                                                                                                                                                          #13 0x00007fc23cfbfb5d gtk_main (libgtk-3.so.0)                                                                                                                                                                    #14 0x0000560bab8c15c2 main (xfce4-session)                                                                                                                                                                        
#15 0x00007fc23c590413 __libc_start_main (libc.so.6)                                                                                                                                                               #16 0x0000560bab8c188e _start (xfce4-session)                                                                                                                                                                                                                                                                                                                                                                                         Stack trace of thread 3344:                                                                                                                                                                                        #0  0x00007fc23c65e371 __poll (libc.so.6)                                                                                                                                                                          #1  0x00007fc23c7a15a6 n/a (libglib-2.0.so.0)                                                                                                                                                                      #2  0x00007fc23c7a16d0 g_main_context_iteration (libglib-2.0.so.0)                                                                                                                                                 #3  0x00007fc23c7a1721 n/a (libglib-2.0.so.0)                                                                                                                                                                      
#4  0x00007fc23c7ca48a n/a (libglib-2.0.so.0)                                                                                                                                                                      #5  0x00007fc23c73a58e start_thread (libpthread.so.0)                                                                                                                                                              #6  0x00007fc23c669593 __clone (libc.so.6)                                                                                                                                                                                                                                                                                                                                                                                            Stack trace of thread 3464:                                                                                                                                                                                        #0  0x00007fc23c663ded syscall (libc.so.6)                                                                                                                                                                         #1  0x00007fc23c7e911e g_cond_wait_until (libglib-2.0.so.0)                                                                                                                                                        #2  0x00007fc23c773231 n/a (libglib-2.0.so.0)                                                                                                                                                                      #3  0x00007fc23c7cafd2 n/a (libglib-2.0.so.0)                                                                                                                                                                      
#4  0x00007fc23c7ca48a n/a (libglib-2.0.so.0)                                                                                                                                                                      #5  0x00007fc23c73a58e start_thread (libpthread.so.0)                                                                                                                                                              #6  0x00007fc23c669593 __clone (libc.so.6)    


Version-Release number of selected component (if applicable):
xfce4-session-4.13.1-20.fc29.x86_64
lightdm-1.28.0-2.fc29.x86_64

Right now I switched to gdm which seems to work.