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Re: Weird random reboot -- thinkpad x220



Hi,

you're not paranoid, I've seen sudden reboots running wheezy (when it
was testing and i think even since it's stable) on my x220 as well.
though very rarely. i don't recall having seen it since September. but i
remember it even happened once when i was sitting in front of it.

I'm sorry i have to date not the slightest idea how to reproduce the
behaviour.

the time i happened to see it, it looked like the power went out (with
PSU connected and battery fully charged). after about a second in which
i wondered what was going on, the computer booted as if it was switched
off and somebody pressed the power button.

It's not triggered by high CPU temperature (reached heavier loads and
higher package temperatures often). It's also not electrostatic sparks
(my office chair + clothes quite often gave sparkes over the keyboard or
headset connector which didn't harm the device).
It's also not triggered by large uptimes (also reached much larger
values than when the sudden-reboot happened often).

Cheers,
Paul

On 29.04.2014 20:50, Ivan Kovnatsky wrote:
> Hi Guys,
> 
> Today returned home from work, saw that instead of X on my laptop virtual
> console is opened.  That pretty amused me, -- almost never shutdown my laptop
> if it stays home.  Looking into last command output I saw that a reboot
> happened around 11:29 Apr 28:
> 
> __
> sevenfou pts/1        :0               Mon Apr 28 19:23 - down   (00:31)
> sevenfou pts/0        :0               Mon Apr 28 19:21 - down   (00:32)
> root     tty3                          Mon Apr 28 19:21 - 19:30  (00:08)
> sevenfou pts/0        XXXXXXXXXXXXX    Mon Apr 28 15:56 - 16:38  (00:41)
> reboot   system boot  3.13-1-amd64     Mon Apr 28 11:29 - 19:54  (08:24)
> sevenfou pts/9        :0               Sun Apr 27 10:31 - 16:50  (06:18)
> sevenfou pts/9        :0               Sun Apr 27 01:26 - 01:36  (00:10)
> __
> 
> 
> here is /var/log/syslog:
> __
> Apr 28 11:25:01 lefrat /USR/SBIN/CRON[28141]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
> Apr 28 11:25:16 lefrat kernel: [306970.108480] iptables denied: IN=wlan1 OUT= MAC=e0:94:67:0c:20:2c:54:04:a6:e8:1d:a4:08:00 SRC=173.194.39.132 DST=192.168.1.218 LEN=40 TOS=0x00 PREC=0x00 TTL=50 ID=43730 PROTO=TCP SPT=443 DPT=60021 WINDOW=0 RES=0x00 RST URGP=0
> Apr 28 11:25:16 lefrat kernel: [306970.109093] iptables denied: IN=wlan1 OUT= MAC=e0:94:67:0c:20:2c:54:04:a6:e8:1d:a4:08:00 SRC=173.194.39.132 DST=192.168.1.218 LEN=40 TOS=0x00 PREC=0x00 TTL=50 ID=43731 PROTO=TCP SPT=443 DPT=60021 WINDOW=0 RES=0x00 RST URGP=0
> Apr 28 11:25:16 lefrat kernel: [306970.109670] iptables denied: IN=wlan1 OUT= MAC=e0:94:67:0c:20:2c:54:04:a6:e8:1d:a4:08:00 SRC=173.194.39.132 DST=192.168.1.218 LEN=40 TOS=0x00 PREC=0x00 TTL=50 ID=43732 PROTO=TCP SPT=443 DPT=60021 WINDOW=0 RES=0x00 RST URGP=0
> Apr 28 11:27:01 lefrat /USR/SBIN/CRON[30771]: (root) CMD (/usr/local/sbin/batlow)
> Apr 28 11:29:37 lefrat rsyslogd: [origin software="rsyslogd" swVersion="7.6.3" x-pid="2239" x-info="http://www.rsyslog.com";] start
> Apr 28 11:29:37 lefrat kernel: [    0.000000] Initializing cgroup subsys cpuset
> Apr 28 11:29:37 lefrat kernel: [    0.000000] Initializing cgroup subsys cpu
> Apr 28 11:29:37 lefrat kernel: [    0.000000] Initializing cgroup subsys cpuacct
> Apr 28 11:29:37 lefrat kernel: [    0.000000] Linux version 3.13-1-amd64 (debian-kernel@lists.debian.org) (gcc version 4.8.2 (Debian 4.8.2-16) ) #1 SMP Debian 3.13.10-1 (2014-04-15)
> Apr 28 11:29:37 lefrat kernel: [    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-3.13-1-amd64 root=/dev/sda1 ro
> Apr 28 11:29:37 lefrat kernel: [    0.000000] Disabled fast string operations
> Apr 28 11:29:37 lefrat kernel: [    0.000000] e820: BIOS-provided physical RAM map:
> __
> 
> 
> /var/log/debug:
> __
> Apr 28 11:25:16 lefrat kernel: [306970.108480] iptables denied: IN=wlan1 OUT= MAC=e0:94:67:0c:20:2c:54:04:a6:e8:1d:a4:08:00 SRC=173.194.39.132 DST=192.168.1.218 LEN=40 TO
> S=0x00 PREC=0x00 TTL=50 ID=43730 PROTO=TCP SPT=443 DPT=60021 WINDOW=0 RES=0x00 RST URGP=0
> Apr 28 11:25:16 lefrat kernel: [306970.109093] iptables denied: IN=wlan1 OUT= MAC=e0:94:67:0c:20:2c:54:04:a6:e8:1d:a4:08:00 SRC=173.194.39.132 DST=192.168.1.218 LEN=40 TO
> S=0x00 PREC=0x00 TTL=50 ID=43731 PROTO=TCP SPT=443 DPT=60021 WINDOW=0 RES=0x00 RST URGP=0
> Apr 28 11:25:16 lefrat kernel: [306970.109670] iptables denied: IN=wlan1 OUT= MAC=e0:94:67:0c:20:2c:54:04:a6:e8:1d:a4:08:00 SRC=173.194.39.132 DST=192.168.1.218 LEN=40 TO
> S=0x00 PREC=0x00 TTL=50 ID=43732 PROTO=TCP SPT=443 DPT=60021 WINDOW=0 RES=0x00 RST URGP=0
> Apr 28 11:29:37 lefrat kernel: [    0.000000] DMI: LENOVO 4286CTO/4286CTO, BIOS 8DET69WW (1.39 ) 07/18/2013
> Apr 28 11:29:37 lefrat kernel: [    0.000000] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
> Apr 28 11:29:37 lefrat kernel: [    0.000000] e820: remove [mem 0x000a0000-0x000fffff] usable
> Apr 28 11:29:37 lefrat kernel: [    0.000000] MTRR default type: uncachable
> Apr 28 11:29:37 lefrat kernel: [    0.000000] MTRR fixed ranges enabled:
> Apr 28 11:29:37 lefrat kernel: [    0.000000]   00000-9FFFF write-back
> Apr 28 11:29:37 lefrat kernel: [    0.000000]   A0000-BFFFF uncachable
> Apr 28 11:29:37 lefrat kernel: [    0.000000]   C0000-FFFFF write-protect
> Apr 28 11:29:37 lefrat kernel: [    0.000000] MTRR variable ranges enabled:
> __
> 
> 
> /var/log/auth.log:
> __
> Apr 28 11:25:01 lefrat CRON[28140]: pam_unix(cron:session): session opened for user root by (uid=0)
> Apr 28 11:25:01 lefrat CRON[28140]: pam_unix(cron:session): session closed for user root
> Apr 28 11:27:01 lefrat CRON[30770]: pam_unix(cron:session): session opened for user root by (uid=0)
> Apr 28 11:27:01 lefrat CRON[30770]: pam_unix(cron:session): session closed for user root
> Apr 28 11:29:38 lefrat sshd[2527]: Server listening on 0.0.0.0 port xxxxx.
> Apr 28 11:30:03 lefrat CRON[2635]: pam_unix(cron:session): session opened for user sevenfourk by (uid=0)
> Apr 28 11:30:03 lefrat CRON[2633]: pam_unix(cron:session): session opened for user root by (uid=0)
> Apr 28 11:30:03 lefrat CRON[2634]: pam_unix(cron:session): session opened for user sevenfourk by (uid=0)
> Apr 28 11:30:03 lefrat CRON[2633]: pam_unix(cron:session): session closed for user root
> __
> 
> 
> Also there was no any power losses for sure:
> __
> Apr 28 11:18:01 /usr/local/sbin/batlow: Battery: Normal: 99%
> Apr 28 11:21:01 /usr/local/sbin/batlow: Battery: Normal: 99%
> Apr 28 11:24:01 /usr/local/sbin/batlow: Battery: Normal: 99%
> Apr 28 11:27:01 /usr/local/sbin/batlow: Battery: Normal: 99%
> Apr 28 11:30:03 /usr/local/sbin/batlow: Battery: Normal: 99%
> Apr 28 11:33:01 /usr/local/sbin/batlow: Battery: Normal: 99%
> __
> 
> 
> Very strange, hopefully I'm not paranoid.  No one was at home at that time.
> Maybe I'm missing something, maybe another log to check. I would be glad if
> someone shares some thoughts on looking into details on reboot info.
> 
> 
> Thanks,
> Ivan.
> 


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