Linux莫名其妙地重启XFCE

我的是xfce桌面的linux，前几天装好的系统，老是莫名其妙的重启xfce，这里上下日志，求各位帮帮忙。

 Aug 20 19:05:41 netcan-linux gdm-autologin][1509]: GLib: Source ID 38 was not found when attempting to remove it
Aug 20 19:05:41 netcan-linux gdm-simple-slave[1209]: Child process 1244 was already dead.
Aug 20 19:05:41 netcan-linux gdm-simple-slave[1209]: GLib: Source ID 4 was not found when attempting to remove it
Aug 20 19:05:41 netcan-linux gdm-simple-slave[1209]: Child process 1244 was already dead.
Aug 20 19:05:41 netcan-linux gdm-simple-slave[1209]: GLib-GObject: g_object_ref: assertion 'object->ref_count > 0' failed
Aug 20 19:05:41 netcan-linux gdm-simple-slave[1209]: GLib-GObject: g_object_unref: assertion 'object->ref_count > 0' failed
Aug 20 19:05:41 netcan-linux acpid: client connected from 10538[0:0]
Aug 20 19:05:41 netcan-linux acpid: 1 client rule loaded
Aug 20 19:05:41 netcan-linux gdm-simple-slave[10533]: Failed to give slave programs access to the display. Trying to proceed.
Aug 20 19:05:41 netcan-linux gnome-session[10550]: WARNING: Could not parse desktop file orca-autostart.desktop or it references a not found TryExec binary
Aug 20 19:05:41 netcan-linux dbus[837]: [system] Activating service name='org.freedesktop.systemd1' (using servicehelper)
Aug 20 19:05:41 netcan-linux dbus[837]: [system] Successfully activated service 'org.freedesktop.systemd1'
Aug 20 19:05:41 netcan-linux dbus[837]: [system] Activating service name='org.freedesktop.ColorManager' (using servicehelper)
Aug 20 19:05:41 netcan-linux colord: Using config file /etc/colord.conf
Aug 20 19:05:41 netcan-linux colord: Using mapping database file /var/lib/colord/mapping.db
Aug 20 19:05:41 netcan-linux colord: Using device database file /var/lib/colord/storage.db
Aug 20 19:05:41 netcan-linux colord: plugin /usr/lib/x86_64-linux-gnu/colord-plugins/libcd_plugin_sane.so not loaded: plugin refused to load
Aug 20 19:05:41 netcan-linux colord: loaded plugin libcd_plugin_camera.so
Aug 20 19:05:41 netcan-linux colord: loaded plugin libcd_plugin_scanner.so
Aug 20 19:05:41 netcan-linux colord: Daemon ready for requests
Aug 20 19:05:41 netcan-linux dbus[837]: [system] Successfully activated service 'org.freedesktop.ColorManager'
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-d4a7a2bd8ddaacf10e275e3db31d72b8
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-654b99c87e67edb1c1cfb0dcb7fa9d04
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-ea421e3a65cfa796e2732ce36086e327
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-72f5b1cba915b68ea75cc843e270df5a
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-fb0ac62618f016ed9b92ce239258efa8
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-6ad6d63767ce0393245528ada92f1cb2
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-523e494bc2f53c53d51d0758b07f4879
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-0383c34650771ce95ef93fe916867725
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-3a34aa6c3d1fb1ef63ff41e04ee00979
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-c3e6382fa9b2d31b01b736f6f97aac3a
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-f64a1f19ce07290b35a752b00217b684
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-526fbc9bdf0d7156c553998d47a3b5fc
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-b0701c2ccf059287d0b067464df8bda9
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-d6490883a866e4059370e1de1d840283
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-3bd2261b1125a0fd9ebf827a2d1bed84
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-353a6bcabda00f04b6988f89126ce6f5
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-6a245ab2d8892e2e56232af93cd48b81
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-57f0d896250f6f98f77ca1b0d19019c0
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-a10be98be58460669fcdc6946939b7cf
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-df7c0067b1eb9bcc9fc9b33bc3a797eb
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-0720e7cdbc792b77c0740c39f325ef9e
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-2f1f11ecd613fe5551420fcaf5b11ff8
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-c227f46f246694ba9971f270cb61a0c1
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-a1d13bd5309e0f06ceda6f0d75367823
Aug 20 19:05:41 netcan-linux colord: Device added: xrandr-Chimei Innolux Corporation
Aug 20 19:05:41 netcan-linux colord: Automatic metadata add icc-b07e307958bb023327afc8b5d02ad4c1 to xrandr-Chimei Innolux Corporation
Aug 20 19:05:41 netcan-linux colord: Profile added: icc-b07e307958bb023327afc8b5d02ad4c1
Aug 20 19:05:52 netcan-linux gdm-launch-environment][10546]: GLib: Source ID 73 was not found when attempting to remove it
Aug 20 19:05:52 netcan-linux gdm-simple-slave[10533]: Failed to remove slave program access to the display. Trying to proceed.
Aug 20 19:05:52 netcan-linux colord: device removed: xrandr-Chimei Innolux Corporation
Aug 20 19:05:52 netcan-linux colord: Profile removed: icc-b07e307958bb023327afc8b5d02ad4c1
Aug 20 19:05:54 netcan-linux dbus[837]: [system] Activating service name='org.freedesktop.RealtimeKit1' (using servicehelper)
Aug 20 19:05:54 netcan-linux dbus[837]: [system] Successfully activated service 'org.freedesktop.RealtimeKit1'
Aug 20 19:05:54 netcan-linux rtkit-daemon[11078]: Successfully called chroot.
Aug 20 19:05:54 netcan-linux rtkit-daemon[11078]: Successfully dropped privileges.
Aug 20 19:05:54 netcan-linux rtkit-daemon[11078]: Successfully limited resources.
Aug 20 19:05:54 netcan-linux rtkit-daemon[11078]: Running.
Aug 20 19:05:54 netcan-linux rtkit-daemon[11078]: Watchdog thread running.
Aug 20 19:05:54 netcan-linux rtkit-daemon[11078]: Canary thread running.
Aug 20 19:05:54 netcan-linux rtkit-daemon[11078]: Successfully made thread 11076 of process 11076 (n/a) owned by '1000' RT at priority 3.
Aug 20 19:05:54 netcan-linux rtkit-daemon[11078]: Supervising 1 threads of 1 processes of 1 users.
Aug 20 19:06:03 netcan-linux rtkit-daemon[11078]: Successfully made thread 11356 of process 11239 (n/a) owned by '1000' RT at priority 2.
Aug 20 19:06:03 netcan-linux rtkit-daemon[11078]: Supervising 2 threads of 2 processes of 1 users.