我看到一个对话框，上面写着“立即关闭系统”，就像我在主菜单中单击“退出”一样。这看起来是随机发生的。如果我选择“取消”，它有时会消失。其他时候，它会再次弹出。无论我是否单击“取消”，我的笔记本电脑都会立即关闭，就像所有电源都消失了一样。当我运行“last -x”时，我看到：
korgan pts/1 :0 Sat Jul 27 07:32 still logged in
korgan tty8 :0 Sat Jul 27 06:57 still logged in
runlevel (to lvl 2) 3.5.0-17-generic Sat Jul 27 06:57 - 07:42 (00:44)
reboot system boot 3.5.0-17-generic Sat Jul 27 06:57 - 07:42 (00:44)
korgan pts/1 :0 Fri Jul 26 20:27 - 21:13 (00:46)
korgan pts/1 :0 Fri Jul 26 17:05 - 18:07 (01:02)
korgan tty8 :0 Fri Jul 26 17:02 - crash (13:54)
runlevel (to lvl 2) 3.5.0-17-generic Fri Jul 26 17:02 - 06:57 (13:54)
reboot system boot 3.5.0-17-generic Fri Jul 26 17:02 - 07:42 (14:39)
shutdown system down 3.5.0-17-generic Fri Jul 26 17:02 - 17:02 (00:00)
shutdown system down 3.5.0-17-generic Fri Jul 26 17:01 - 17:02 (00:00)
runlevel (to lvl 6) 3.5.0-17-generic Fri Jul 26 17:01 - 17:01 (00:00)
korgan tty8 :0 Fri Jul 26 16:20 - 17:01 (00:41)
runlevel (to lvl 2) 3.5.0-17-generic Fri Jul 26 16:19 - 17:01 (00:41)
reboot system boot 3.5.0-17-generic Fri Jul 26 16:19 - 17:01 (00:41)
26 日 13:54 出现“崩溃”条目，尽管昨晚发生的崩溃发生在第二天（27 日）重启之前。
出现这个提示时我检查了cpu的温度，没有异常，一般在52℃左右。我不知道我的下一步应该是什么。我在 Gateway NV53A 上运行 Linux Mint 14。
我查看了一下/var/log/syslog，在关闭时发现了这一点：
Jul 27 09:29:39 Ono-Sendai kernel: [ 9146.988498] type=1701 audit(1374935379.026:3114): auid=4294967295 uid=1000 gid=1000 ses=4294967295 pid=5729 comm="chrome" reason="seccomp" sig=0 syscall=2 compat=0 ip=0x7f368d4f96c0 code=0x50000
Jul 27 09:29:39 Ono-Sendai kernel: [ 9146.988507] type=1701 audit(1374935379.026:3115): auid=4294967295 uid=1000 gid=1000 ses=4294967295 pid=5729 comm="chrome" reason="seccomp" sig=0 syscall=2 compat=0 ip=0x7f368d4f96c0 code=0x50000
Jul 27 09:31:13 Ono-Sendai kernel: imklog 5.8.6, log source = /proc/kmsg started.
Jul 27 09:31:13 Ono-Sendai rsyslogd: [origin software="rsyslogd" swVersion="5.8.6" x-pid="619" x-info="http://www.rsyslog.com"] start
Jul 27 09:31:14 Ono-Sendai rsyslogd: rsyslogd's groupid changed to 103
Jul 27 09:31:14 Ono-Sendai rsyslogd: rsyslogd's userid changed to 101
Jul 27 09:31:13 Ono-Sendai rsyslogd-2039: Could not open output pipe '/dev/xconsole' [try http://www.rsyslog.com/e/2039 ]
Jul 27 09:31:14 Ono-Sendai bluetoothd[672]: Bluetooth daemon 4.101
Jul 27 09:31:14 Ono-Sendai bluetoothd[672]: Starting SDP server
Jul 27 09:31:14 Ono-Sendai bluetoothd[672]: DIS cannot start: GATT is disabled
Jul 27 09:31:14 Ono-Sendai bluetoothd[672]: Failed to init deviceinfo plugin
Jul 27 09:31:14 Ono-Sendai bluetoothd[672]: Failed to init proximity plugin
Jul 27 09:31:14 Ono-Sendai bluetoothd[672]: Failed to init time plugin
Jul 27 09:31:14 Ono-Sendai bluetoothd[672]: Failed to init alert plugin
Jul 27 09:31:14 Ono-Sendai bluetoothd[672]: Failed to init thermometer plugin
Jul 27 09:31:14 Ono-Sendai avahi-daemon[699]: Found user 'avahi' (UID 111) and group 'avahi' (GID 120).
Jul 27 09:31:14 Ono-Sendai kernel: [ 0.000000] Initializing cgroup subsys cpuset
Jul 27 09:31:14 Ono-Sendai avahi-daemon[699]: Successfully dropped root privileges.
Jul 27 09:31:14 Ono-Sendai avahi-daemon[699]: avahi-daemon 0.6.31 starting up.
Jul 27 09:31:14 Ono-Sendai avahi-daemon[699]: Successfully called chroot().
Jul 27 09:31:14 Ono-Sendai avahi-daemon[699]: Successfully dropped remaining capabilities.
Jul 27 09:31:14 Ono-Sendai kernel: [ 0.000000] Initializing cgroup subsys cpu
Jul 27 09:31:14 Ono-Sendai kernel: [ 0.000000] Linux version 3.5.0-17-generic (buildd@allspice) (gcc version 4.7.2 (Ubuntu/Linaro 4.7.2-2ubuntu1) ) #28-Ubuntu SMP Tue Oct 9 19:31:23 UTC 2012 (Ubuntu 3.5.0-17.28-generic 3.5.5)