Unscheduled unattended boot

Phil Dobbin bukowskiscat at gmail.com
Sat Nov 24 23:04:49 UTC 2012

On 11/24/2012 08:43 PM, NoOp wrote:

> On 11/24/2012 04:28 AM, Phil Dobbin wrote:
>> Hi, all.
>> I upgraded my youngest son's HP desktop machine to Quantal & now, for
>> some unknown reason, it boots up at 06:30 every morning (I found out the
>> time of the boot after hearing its start-up password prompt when walking
>> past his bedroom door).
>> It happens every morning & I had been blaming him for it (I've got the
>> whole home LAN monitored by Nagios & all machines except mine are
>> powered off by via cron at 22:00 each night so I see its upstate from
>> Nagios every morning) but one this particular morning when I heard it
>> boot, he was fast asleep.
>> There's nothing installed like gwakeonlan or similar & I'm at a loss to
>> explain it. Both my wife & other two children are using Precise & they
>> do not have this particular problem.
> You don't need gwakeonlan for the port to be triggered, or system power
> on.
> Double check:
> $ sudo apt-get intall ethtool
> (if you don't already have it installed)
> $ sudo ethtoool ethx (x = 0,1,2 etc)
> Check:
> 	Supports Wake-on:
> 	Wake-on:
> $man ethtool:
> <http://manpages.ubuntu.com/manpages/precise/man8/ethtool.8.html>
>  wol p|u|m|b|a|g|s|d...
>               Sets Wake-on-LAN options.  Not all devices  support  this.
>   The argument  to  this  option  is a string of characters specifying
>               which options to enable.
>               p   Wake on PHY activity
>               u   Wake on unicast messages
>               m   Wake on multicast messages
>               b   Wake on broadcast messages
>               a   Wake on ARP
>               g   Wake on MagicPacket™
>               s   Enable SecureOn™ password for MagicPacket™
>               d   Disable (wake on  nothing).   This  option
>                   clears all previous options.
> If 'Wake-on' is set to anything other than 'd':
> $ sudo ethtool -s eth(x) d
> will turn it off.
> If 'Supports Wake-on' shows anything in addition to 'g' and 's' (i.e.,
> pumba), then WOL can be triggered without a "MagicPacket™".
> You might also want to check acpi wakeup:
> /proc/acpi/wakeup
> <http://wiki.xbmc.org/index.php?title=How-to:Enable_Wake-On-Device_for_Ubuntu>

Come to think about it, I'm pretty sure ethtool is installed (I have
vague memories of looking for it on their machines recently; I know it's
on my copy of Precise) but I'm certain it wasn't activated. I check its
status. Thanks for the run down of the commands.

> Anything in the logs?

Nothing that I could see. As it's the weekend, I've let him have his
computer on 'til midnight, so I'll ssh in & have a peek.

Thanks for your help.



currently (ab)using
CentOS 5.8 & 6.3, Debian Squeeze & Wheezy, Fedora Beefy, OS X Snow
Leopard & Ubuntu Precise & Quantal

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