[LightDM] kernel: lightdm-gtk-gre segfault at 0 ip

[xm xm]

here are the configurations I have:


 cat /etc/lightdm/lightdm.conf
[LightDM]
minimum-vt=1
user-authority-in-system-dir=true
start-default-seat=false

[SeatDefaults]
xserver-command=X -background none
greeter-session=lightdm-greeter
greeter-hide-users=true
greeter-show-manual-login=true
user-session=/usr/share/xsessions/xfce.desktop
allow-guest=false
session-wrapper=/etc/X11/xinit/Xsession


[XDMCPServer]
enabled=true

[VNCServer]
enabled=true

cat /etc/lightdm/lightdm-gtk-greeter.conf
[greeter]
background=/usr/share/backgrounds/lightdm_cc.jpg
show-indicators=~session
show-clock=true
clock-format=%c


Any help is welcom.


________________________________
From: xm xm <niu_xiaomei at hotmail.com>
Sent: Thursday, March 15, 2018 3:49 PM
To: lightdm at lists.freedesktop.org
Subject: kernel: lightdm-gtk-gre segfault at 0 ip


Hello everyone,


I use tigervnc and lightdm on two CentOS 7.4 servers. The following packages are installed:


kernel: kernel-3.10.0-693.17.1.el7.x86_64


lightdm-1.18.3-5.el7.x86_64
lightdm-gobject-1.18.3-5.el7.x86_64

lightdm-gtk-1.8.5-19.el7.x86_64
lightdm-gtk-common-1.8.5-19.el7.noarch

tigervnc-license-1.8.0-2.el7_4.noarch
tigervnc-server-1.8.0-2.el7_4.x86_64
tigervnc-server-minimal-1.8.0-2.el7_4.x86_64


One is workering for more than one year .

The 2nd one also. but yesterday I have to reinstall it because one disk is failed and changed. After the installation, I believe I did the same configuation, but the 2nd one is not working. The VNC connection is just showing a black screen, then close.


I see the following error logs:

lightdm[32702]: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
lightdm[37158]: pam_unix(lightdm-greeter:session): session opened for user lightdm by (uid=0)
lightdm[32702]: Error activating login1 session: GDBus.Error:org.freedesktop.DBus.Error.NotSupported: Operation not supported
kernel: lightdm-gtk-gre[37161]: segfault at 0 ip 000055fa326fc710 sp 00007ffd011f8fc0 error 4 in lightdm-gtk-greeter[55fa326f2000+13000]


The last line above, looks like something related with kernel?



I really lost. Please let me know if you need more information for my problem.


Thanks in advance!


Xm




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