User-Agent:       Mozilla/5.0 (X11; Linux x86_64; rv:46.0) Gecko/20100101
Firefox/46.0
Build Identifier: 

I am using openSUSE Tumbleweed which is version 20160530. After that I updated
to version 20160605 with zypper dup command. 
I was reboot then gdm crashes because of too many attempts to start.
The problem is according to the journalctl messages
as follows:

# journalctl -r

Jun 08 18:17:36 Lahana /usr/lib/gdm/gdm-wayland-session[6744]: Unable to
register display with display manager
Jun 08 18:17:36 Lahana audit[6741]: USER_START pid=6741 uid=0 auid=4294967295
ses=4294967295 msg='op=PAM:session_open
grantors=pam_limits,pam_unix,pam_umask,pam_env acct="gdm"
exe="/usr/lib/gdm/gdm-session-worke
Jun 08 18:17:36 Lahana gdm-launch-environment][6741]:
pam_unix(gdm-launch-environment:session): session opened for user gdm by
(uid=0)
Jun 08 18:17:36 Lahana audit[6741]: CRED_ACQ pid=6741 uid=0 auid=4294967295
ses=4294967295 msg='op=PAM:setcred grantors=pam_permit acct="gdm"
exe="/usr/lib/gdm/gdm-session-worker" hostname=? addr=? terminal=/dev
Jun 08 18:17:36 Lahana audit[6741]: USER_ACCT pid=6741 uid=0 auid=4294967295
ses=4294967295 msg='op=PAM:accounting grantors=pam_permit acct="gdm"
exe="/usr/lib/gdm/gdm-session-worker" hostname=? addr=? terminal=
Jun 08 18:17:36 Lahana audit[6741]: USER_AUTH pid=6741 uid=0 auid=4294967295
ses=4294967295 msg='op=PAM:authentication grantors=pam_permit acct="gdm"
exe="/usr/lib/gdm/gdm-session-worker" hostname=? addr=? termi
Jun 08 18:17:36 Lahana gdm[1638]: Unable to kill session worker process
Jun 08 18:17:36 Lahana gdm[1638]: Child process 6731 was already dead.
Jun 08 18:17:36 Lahana gdm[1638]: Child process -6734 was already dead.
Jun 08 18:17:35 Lahana audit[6731]: CRED_DISP pid=6731 uid=0 auid=4294967295
ses=4294967295 msg='op=PAM:setcred grantors=pam_permit acct="gdm"
exe="/usr/lib/gdm/gdm-session-worker" hostname=? addr=? terminal=/de
Jun 08 18:17:35 Lahana audit[6731]: USER_END pid=6731 uid=0 auid=4294967295
ses=4294967295 msg='op=PAM:session_close
grantors=pam_limits,pam_unix,pam_umask,pam_env acct="gdm"
exe="/usr/lib/gdm/gdm-session-worker
Jun 08 18:17:35 Lahana gdm-launch-environment][6731]:
pam_unix(gdm-launch-environment:session): session closed for user gdm

this logs looping
In each time it wants to start again, but does not succeed.

These messages are repeating (with increasing session numbers) certain times
and than *NO* Login Screen appears. Instead the screen is frozen. lightdm is
working with gnome.


Reproducible: Always