apport中的关于Xorg的错误报告

[fantuan]

ERROR: apport (pid 8055) Mon May 15 09:42:48 2017: called for pid 6345, signal 6, core limit 4294967295
ERROR: apport (pid 8055) Mon May 15 09:42:48 2017: executable: /usr/lib/xorg/Xorg (command line "/usr/lib/xorg/Xorg -core :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch")
ERROR: apport (pid 8055) Mon May 15 09:42:48 2017: is_closing_session(): no DBUS_SESSION_BUS_ADDRESS in environment
ERROR: apport (pid 8055) Mon May 15 09:42:48 2017: this executable already crashed 2 times, ignoring

现象是用着用着突然就是桌面崩溃，进入了用户登录界面。登录后，之前打开的应用全部关闭。一上午就碰到了5、6次了。特来求助

[扩展 1 已经被禁用并不再显示]

[poloshiao]

ERROR: apport (pid 8055) Mon May 15 09:42:48 2017: executable: /usr/lib/xorg/Xorg (command line "/usr/lib/xorg/Xorg -core :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch")

https://bugs.launchpad.net/ubuntu/+sour ... ug/1431654