mint17.3，最近使用 Intellij IDEA 的时候老是自动 logout

mate 桌面， kernel 是 4.2.0-21 ，主板是华硕 b150 plus ，前两三星期前装的机，然后使用过程中，其他软件都没有问题，唯独 IDEA 的时候，大概半个多钟会 logout 一次，频率不固定，连续使用 IDEA 的时候间隔就短，偶尔码一下代码，间隔就长一些。有没有人遇过一样的问题？下面是 sys log ，系统在 23 点 29 分的时候发生 logout ：
Apr 29 22:51:37 arthur-PC dbus[512]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper)
Apr 29 22:51:37 arthur-PC dbus[512]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
Apr 29 23:17:01 arthur-PC CRON[18670]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
Apr 29 23:29:45 arthur-PC mdm[9541]: WARNING: mdm_slave_xioerror_handler: Fatal X error - Restarting :0
Apr 29 23:29:45 arthur-PC pulseaudio[19231]: [pulseaudio] client-conf-x11.c: xcb_connection_has_error() returned true
Apr 29 23:29:45 arthur-PC pulseaudio[19232]: [pulseaudio] client-conf-x11.c: xcb_connection_has_error() returned true
Apr 29 23:29:45 arthur-PC ag[19239]: mdm-superpost Starting...
Apr 29 23:29:45 arthur-PC ag[19243]: mdm-superpost Finished
Apr 29 23:29:45 arthur-PC rtkit-daemon[2104]: Successfully made thread 19237 of process 19237 (n/a) owned by '1000' high priority at nice level -11.
Apr 29 23:29:45 arthur-PC rtkit-daemon[2104]: Supervising 1 threads of 1 processes of 1 users.
Apr 29 23:29:45 arthur-PC pulseaudio[19237]: [pulseaudio] pid.c: Stale PID file, overwriting.
Apr 29 23:29:45 arthur-PC rtkit-daemon[2104]: Successfully made thread 19249 of process 19237 (n/a) owned by '1000' RT at priority 5.
Apr 29 23:29:45 arthur-PC rtkit-daemon[2104]: Supervising 2 threads of 1 processes of 1 users.
Apr 29 23:29:45 arthur-PC rtkit-daemon[2104]: Successfully made thread 19250 of process 19237 (n/a) owned by '1000' RT at priority 5.
Apr 29 23:29:45 arthur-PC rtkit-daemon[2104]: Supervising 3 threads of 1 processes of 1 users.
Apr 29 23:29:45 arthur-PC pulseaudio[19237]: [pulseaudio] server-lookup.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NoServer: Failed to connect to socket /tmp/dbus-PkcBovSiGb: Connection refused
Apr 29 23:29:45 arthur-PC pulseaudio[19237]: [pulseaudio] main.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NoServer: Failed to connect to socket /tmp/dbus-PkcBovSiGb: Connection refused
Apr 29 23:29:45 arthur-PC pulseaudio[19237]: [pulseaudio] bluetooth-util.c: org.bluez.Manager.GetProperties() failed: org.freedesktop.DBus.Error.AccessDenied: Rejected send message, 2 matched rules; type="method_call", sender=":1.109" (uid=1000 pid=19237 comm="/usr/bin/pulseaudio --start --log-target=syslog ") interface="org.bluez.Manager" member="GetProperties" error name="(unset)" requested_reply="0" destination="org.bluez" (uid=0 pid=549 comm="/usr/sbin/bluetoothd ")
Apr 29 23:29:45 arthur-PC rtkit-daemon[2104]: Successfully made thread 19252 of process 19252 (n/a) owned by '1000' high priority at nice level -11.
Apr 29 23:29:45 arthur-PC rtkit-daemon[2104]: Supervising 4 threads of 2 processes of 1 users.
Apr 29 23:29:45 arthur-PC pulseaudio[19252]: [pulseaudio] pid.c: Daemon already running.
Apr 29 23:29:46 arthur-PC acpid: client 9553[0:0] has disconnected
Apr 29 23:29:46 arthur-PC acpid: client connected from 19255[0:0]
Apr 29 23:29:46 arthur-PC acpid: 1 client rule loaded
Apr 29 23:29:46 arthur-PC ag[19266]: mdm-superinit Starting...
Apr 29 23:29:46 arthur-PC ag[19267]: mdm-superinit Finished
Apr 29 23:29:55 arthur-PC mdm[19245]: GLib-CRITICAL: g_key_file_get_string: assertion 'key_file != NULL' failed
Apr 29 23:29:55 arthur-PC mdm[19245]: GLib-CRITICAL: g_key_file_free: assertion 'key_file != NULL' failed
Apr 29 23:29:55 arthur-PC mate-session[19319]: EggSMClient-WARNING: Invalid Version string '0.9.4' in /home/arthur/.config/autostart/xfce-autostart-wm.desktop
Apr 29 23:29:55 arthur-PC mate-session[19319]: WARNING: Unable to find provider '' of required component 'dock'
Apr 29 23:29:56 arthur-PC mate-session[19319]: WARNING: Could not launch application 'compiz-migrate-to-custom-profile.desktop': Unable to start application: Failed to execute child process "/usr/bin/compiz-migrate-to-custom-profile" (No such file or directory)
Apr 29 23:29:56 arthur-PC dbus[512]: [system] Activating service name='org.mate.SettingsDaemon.DateTimeMechanism' (using servicehelper)
Apr 29 23:29:56 arthur-PC dbus[512]: [system] Successfully activated service 'org.mate.SettingsDaemon.DateTimeMechanism'