Comment # 19 on bug 997486 from Edwin Aponte

Hi, I have checked and I don't have multiple users with the same UID on
/etc/passwd, however this bug is still present on TW20160921.

I have attached the output of # juornalctl --boot=-0. In this case wayland
crashed and there was a coredump that I paste below. After that I logged in as
root on tty1 and issued startx, and gdm started.

edwinaponte-l03:~ # coredumpctl gdb 9678
           PID: 9678 (gnome-shell)
           UID: 472 (gdm)
           GID: 474 (gdm)
        Signal: 5 (TRAP)
     Timestamp: Fri 2016-09-23 15:53:37 BST (6min ago)
  Command Line: /usr/bin/gnome-shell
    Executable: /usr/bin/gnome-shell
 Control Group: /user.slice/user-472.slice/session-c265.scope
          Unit: session-c265.scope
         Slice: user-472.slice
       Session: c265
     Owner UID: 472 (gdm)
       Boot ID: 788008a1c53b4b99a3349d73274ef1e9
    Machine ID: a7cf7a8decff4e51a85b12d92b7432cc
      Hostname: my_hostname.com
      Coredump:
/var/lib/systemd/coredump/core.gnome-shell.472.788008a1c53b4b99a3349d73274ef1e9.9678.1474642417000000.xz
       Message: Process 9678 (gnome-shell) of user 472 dumped core.

GNU gdb (GDB; openSUSE Tumbleweed) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-suse-linux".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://bugs.opensuse.org/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/bin/gnome-shell...Reading symbols from
/usr/lib/debug/usr/bin/gnome-shell.debug...done.
done.
[New LWP 9678]
[New LWP 9680]
[New LWP 9682]
[New LWP 9681]
[New LWP 9679]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `/usr/bin/gnome-shell'.
Program terminated with signal SIGTRAP, Trace/breakpoint trap.
#0  0x00007ff93ac090e1 in ?? () from /usr/lib64/libglib-2.0.so.0
[Current thread is 1 (Thread 0x7ff93dc0d1c0 (LWP 9678))]
(gdb) bt
#0  0x00007ff93ac090e1 in  () at /usr/lib64/libglib-2.0.so.0
#1  0x00007ff93ac0a137 in g_log_default_handler () at
/usr/lib64/libglib-2.0.so.0
#2  0x00007ff93ac0a444 in g_logv () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff93ac0a64f in g_log () at /usr/lib64/libglib-2.0.so.0
#4  0x00007ff93c3f49d8 in  () at /usr/lib64/libmutter.so.0
#5  0x00007ff93b1ad243 in  () at /usr/lib64/libgio-2.0.so.0
#6  0x00007ff93b1ad279 in  () at /usr/lib64/libgio-2.0.so.0
#7  0x00007ff93ac0352a in g_main_context_dispatch () at
/usr/lib64/libglib-2.0.so.0
#8  0x00007ff93ac038e0 in  () at /usr/lib64/libglib-2.0.so.0
#9  0x00007ff93ac03c02 in g_main_loop_run () at /usr/lib64/libglib-2.0.so.0
#10 0x00007ff93c3f50ec in meta_xwayland_start () at /usr/lib64/libmutter.so.0
#11 0x00007ff93c3f4729 in meta_wayland_init () at /usr/lib64/libmutter.so.0
#12 0x00007ff93c3c6575 in meta_init () at /usr/lib64/libmutter.so.0
#13 0x0000000000402112 in main (argc=<optimized out>, argv=<optimized out>) at
main.c:437

Also, interestingly, I can start graphical applications (e.g. xeyes, gedit)
over a ssh -X connection (under the normal user account -- not root).