Debian wheezy：poweroff 后系统自动启动
各位好，笔记本电脑升级到Debian Wheezy 后出现个奇怪的现象，就是在 Gnome下，在gnome-terminal 中用
#poweroff / sudo poweroff
后，系统关机，指示灯全灭后，过不等长时间，系统就会重新开机，我不动电脑，或者合下显示屏都会。自动重新开机后，再次 poweroff (在
console 下或 gnome下)又没有问题。暂未留意是否每次都出现。
刚刚试了回到 Squeeze 的 2.6.32 kernel 没有出现这种问题。系统是在5.31 做的升级，从 squeeze 到
wheezy，先后是 aptitude upgrade;aptitude full-upgrade.
以下是一次从poweroff 关闭到自动重启的 syslog:
Jun 14 23:47:56 Lemmon shutdown[4506]: shutting down for system halt
Jun 14 23:47:57 Lemmon init: Switching to runlevel: 0
Jun 14 23:47:57 Lemmon x-session-manager[2328]: WARNING: Detected that
screensaver has left the bus
Jun 14 23:48:14 Lemmon exiting on signal 15
Jun 14 23:50:53 Lemmon syslogd 1.5.0#6.1: restart.
Jun 14 23:50:54 Lemmon acpid: starting up with netlink and the input layer
Jun 14 23:50:54 Lemmon acpid: 42 rules loaded
Jun 14 23:50:54 Lemmon acpid: waiting for events: event logging is off
Jun 14 23:50:54 Lemmon anacron[1547]: Anacron 2.3 started on 2011-06-14
Jun 14 23:50:54 Lemmon anacron[1547]: Normal exit (0 jobs run)
Jun 14 23:50:55 Lemmon avahi-daemon[1573]: Found user 'avahi' (UID
110) and group 'avahi' (GID 114).
Jun 14 23:50:55 Lemmon avahi-daemon[1573]: Successfully dropped root privileges.
Jun 14 23:50:55 Lemmon avahi-daemon[1573]: avahi-daemon 0.6.30 starting up.
Jun 14 23:50:55 Lemmon avahi-daemon[1573]: Successfully called chroot().
Jun 14 23:50:55 Lemmon avahi-daemon[1573]: Successfully dropped
remaining capabilities.
Jun 14 23:50:55 Lemmon avahi-daemon[1573]: Loading service file
/services/udisks.service.
Jun 14 23:50:55 Lemmon avahi-daemon[1573]: Network interface
enumeration completed.
Jun 14 23:50:55 Lemmon avahi-daemon[1573]: Registering HINFO record
with values 'I686'/'LINUX'.
Jun 14 23:50:55 Lemmon avahi-daemon[1573]: Server startup complete.
Host name is Lemmon.local. Local service cookie is 3966028872.
Jun 14 23:50:55 Lemmon avahi-daemon[1573]: Service "Lemmon"
(/services/udisks.service) successfully established.
Jun 14 23:50:55 Lemmon /usr/sbin/cron[1600]: (CRON) INFO (pidfile fd = 3)
Jun 14 23:50:55 Lemmon /usr/sbin/cron[1601]: (CRON) STARTUP (fork ok)
Jun 14 23:50:55 Lemmon /usr/sbin/cron[1601]: (CRON) INFO (Running @reboot jobs)
Jun 14 23:50:57 Lemmon kernel: Inspecting /boot/System.map-2.6.38-2-686
Jun 14 23:50:57 Lemmon kernel: Cannot find map file.
Jun 14 23:50:57 Lemmon kernel: Loaded 25540 symbols from 152 modules.
Jun 14 23:50:57 Lemmon kernel: [ 0.000000] Initializing cgroup subsys cpuset
以下是目前所有 syslog 日志通过 grep "exiting on signal" -A 1 筛选出来的信息（加*的是自动开机的）：
*Jun 14 23:48:14 Lemmon exiting on signal 15 // 系统关机的最后一条日志
*Jun 14 23:50:53 Lemmon syslogd 1.5.0#6.1: restart. //系统启动的第一条日志
--
Jun 15 00:14:42 Lemmon exiting on signal 15
Jun 15 20:38:21 Lemmon syslogd 1.5.0#6.1: restart.
--
Jun 15 21:00:10 Lemmon exiting on signal 15
Jun 15 22:43:01 Lemmon syslogd 1.5.0#6.1: restart.
--
*Jun 13 23:47:41 Lemmon exiting on signal 15
*Jun 13 23:48:41 Lemmon syslogd 1.5.0#6.1: restart.
--
Jun 14 00:02:32 Lemmon exiting on signal 15
Jun 14 21:29:10 Lemmon syslogd 1.5.0#6.1: restart.
--
*Jun 13 00:25:14 Lemmon exiting on signal 15
*Jun 13 00:28:24 Lemmon syslogd 1.5.0#6.1: restart.
--
Jun 13 00:28:45 Lemmon exiting on signal 15
Jun 13 20:51:24 Lemmon syslogd 1.5.0#6.1: restart.
--
*Jun 10 22:30:26 Lemmon exiting on signal 15
*Jun 10 22:31:26 Lemmon syslogd 1.5.0#6.1: restart.
--
Jun 11 00:19:48 Lemmon exiting on signal 15
Jun 12 15:50:09 Lemmon syslogd 1.5.0#6.1: restart.
--
Jun 9 22:37:47 Lemmon exiting on signal 15
Jun 10 20:38:53 Lemmon syslogd 1.5.0#6.1: restart.
--
*Jun 8 23:43:13 Lemmon exiting on signal 15
*Jun 8 23:44:17 Lemmon syslogd 1.5.0#6.1: restart.
--
Jun 8 23:45:55 Lemmon exiting on signal 15
Jun 9 21:08:10 Lemmon syslogd 1.5.0#6.1: restart.
--
Jun 7 23:36:44 Lemmon exiting on signal 15
Jun 8 21:26:27 Lemmon syslogd 1.5.0#6.1: restart.
--
Jun 6 16:21:59 Lemmon exiting on signal 15
Jun 6 18:00:22 Lemmon syslogd 1.5.0#6.1: restart.
--
*Jun 6 21:37:16 Lemmon exiting on signal 15
*Jun 6 21:38:35 Lemmon syslogd 1.5.0#6.1: restart.
--
*Jun 6 21:38:54 Lemmon exiting on signal 15
*Jun 7 21:42:29 Lemmon syslogd 1.5.0#6.1: restart.
基本上是 1-3 分钟左右就自动启动了，按说系统关机后，OS 就已经没有任何残留了吧。现在不知道是怎么回事？
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