wake-on-lan after power loss ( doesn't work).

My motherboard ( supermicro x5dal-g) has wake on lan which normally
works fine.

However if power is removed ( ie I shutdown normally, unplug
it, then plug it back in ), the machine does not wake up.

Has anybody had a problem with this ( or got it to work)?

I suspect that it is not a problem with other adaptors.

Thanks
b²

My first guess would be to check the BIOS for an option that sounds like
"After power loss..." Alot of boards have an option in the BIOS that keeps
them from powering on automatically after power loss, i.e. power surge,
power plug removed then plugged back in.

Thats my best guess
-Chris

On Tue, 06 Jan 2004 01:34:35 GMT, H Brett Bolen <(E-Mail Removed)>
wrote:

>My motherboard ( supermicro x5dal-g) has wake on lan which normally
>works fine.
>
>However if power is removed ( ie I shutdown normally, unplug
>it, then plug it back in ), the machine does not wake up.
>
>Has anybody had a problem with this ( or got it to work)?
>
>I suspect that it is not a problem with other adaptors.

Nobody with a properly designed motherboard will get the above scenario to
work - because:

- WOL "wakes" only from the "Standby" state,
- and the "Standby" state depends on memory data being kept alive.
- When you lose the mains power to the system, the memory data is lost
- and the system power controller recognizes it is no longer in the "Standby"
state
- hence there will be no WOL function available...

/daytripper

daytripper wrote:
>
> On Tue, 06 Jan 2004 01:34:35 GMT, H Brett Bolen <(E-Mail Removed)>
> wrote:
>
> >My motherboard ( supermicro x5dal-g) has wake on lan which normally
> >works fine.
> >
> >However if power is removed ( ie I shutdown normally, unplug
> >it, then plug it back in ), the machine does not wake up.
> >
> >Has anybody had a problem with this ( or got it to work)?
> >
> >I suspect that it is not a problem with other adaptors.
>
> Nobody with a properly designed motherboard will get the above scenario to
> work - because:
>
> - WOL "wakes" only from the "Standby" state,
> - and the "Standby" state depends on memory data being kept alive.
> - When you lose the mains power to the system, the memory data is lost
> - and the system power controller recognizes it is no longer in the "Standby"
> state
> - hence there will be no WOL function available...

WOL and "boot on power restore" are two different things. What you say is
true for WOL, but with power removed, the real time clock in the BIOS is still
active. All that is needed, is a circuit to turn on the power supply when
mains power is restored. Some BIOSs do have this circuit. The BIOS can
then respond to a WOL request.

Virg Wall
--
A foolish consistency is the
hobgoblin of little minds,........
Ralph Waldo Emerson
(Microsoft programmer's manual.)

On Tue, 06 Jan 2004 06:12:05 GMT, V W Wall <(E-Mail Removed)> wrote:

>daytripper wrote:
>>
>> On Tue, 06 Jan 2004 01:34:35 GMT, H Brett Bolen <(E-Mail Removed)>
>> wrote:
>>
>> >My motherboard ( supermicro x5dal-g) has wake on lan which normally
>> >works fine.
>> >
>> >However if power is removed ( ie I shutdown normally, unplug
>> >it, then plug it back in ), the machine does not wake up.
>> >
>> >Has anybody had a problem with this ( or got it to work)?
>> >
>> >I suspect that it is not a problem with other adaptors.
>>
>> Nobody with a properly designed motherboard will get the above scenario to
>> work - because:
>>
>> - WOL "wakes" only from the "Standby" state,
>> - and the "Standby" state depends on memory data being kept alive.
>> - When you lose the mains power to the system, the memory data is lost
>> - and the system power controller recognizes it is no longer in the "Standby"
>> state
>> - hence there will be no WOL function available...
>
>WOL and "boot on power restore" are two different things. What you say is
>true for WOL, but with power removed, the real time clock in the BIOS is still
>active. All that is needed, is a circuit to turn on the power supply when
>mains power is restored. Some BIOSs do have this circuit. The BIOS can
>then respond to a WOL request.
>
>Virg Wall

No, that won't give you WOL. The bios switch you're referring to cannot return
the system to the *Standby* state, so there's no way WOL will function.

In addition to the requirement I provided, I left out at least one other
critical need for WOL to function. Think about how WOL works and you should
quickly arrive at the correct conclusion...

/daytripper (hint: the bios has nothing to do with it...)

daytripper wrote:
>
> On Tue, 06 Jan 2004 06:12:05 GMT, V W Wall <(E-Mail Removed)> wrote:
>
> >daytripper wrote:
> >>
> >> On Tue, 06 Jan 2004 01:34:35 GMT, H Brett Bolen <(E-Mail Removed)>
> >> wrote:
> >>
> >> >My motherboard ( supermicro x5dal-g) has wake on lan which normally
> >> >works fine.
> >> >
> >> >However if power is removed ( ie I shutdown normally, unplug
> >> >it, then plug it back in ), the machine does not wake up.
> >> >
> >> >Has anybody had a problem with this ( or got it to work)?
> >> >
> >> >I suspect that it is not a problem with other adaptors.
> >>
> >> Nobody with a properly designed motherboard will get the above scenario to
> >> work - because:
> >>
> >> - WOL "wakes" only from the "Standby" state,
> >> - and the "Standby" state depends on memory data being kept alive.
> >> - When you lose the mains power to the system, the memory data is lost
> >> - and the system power controller recognizes it is no longer in the "Standby"
> >> state
> >> - hence there will be no WOL function available...
> >
> >WOL and "boot on power restore" are two different things. What you say is
> >true for WOL, but with power removed, the real time clock in the BIOS is still
> >active. All that is needed, is a circuit to turn on the power supply when
> >mains power is restored. Some BIOSs do have this circuit. The BIOS can
> >then respond to a WOL request.
> >
> >Virg Wall
>
> No, that won't give you WOL. The bios switch you're referring to cannot return
> the system to the *Standby* state, so there's no way WOL will function.

It doesn't need WOL--the system is fully up. You can set the power management
to go to "Standby" if you wish to wait for a WOL. Of course the NIC, or
whatever
is connected to the LAN must be active.
>
> In addition to the requirement I provided, I left out at least one other
> critical need for WOL to function. Think about how WOL works and you should
> quickly arrive at the correct conclusion...
>
> /daytripper (hint: the bios has nothing to do with it...)


--
A foolish consistency is the
hobgoblin of little minds,........
Ralph Waldo Emerson
(Microsoft programmer's manual.)

On Wed, 07 Jan 2004 00:21:38 GMT, V W Wall <(E-Mail Removed)> wrote:

>daytripper wrote:
>>
>> On Tue, 06 Jan 2004 06:12:05 GMT, V W Wall <(E-Mail Removed)> wrote:
>>
>> >daytripper wrote:
>> >>
>> >> On Tue, 06 Jan 2004 01:34:35 GMT, H Brett Bolen <(E-Mail Removed)>
>> >> wrote:
>> >>
>> >> >My motherboard ( supermicro x5dal-g) has wake on lan which normally
>> >> >works fine.
>> >> >
>> >> >However if power is removed ( ie I shutdown normally, unplug
>> >> >it, then plug it back in ), the machine does not wake up.
>> >> >
>> >> >Has anybody had a problem with this ( or got it to work)?
>> >> >
>> >> >I suspect that it is not a problem with other adaptors.
>> >>
>> >> Nobody with a properly designed motherboard will get the above scenario to
>> >> work - because:
>> >>
>> >> - WOL "wakes" only from the "Standby" state,
>> >> - and the "Standby" state depends on memory data being kept alive.
>> >> - When you lose the mains power to the system, the memory data is lost
>> >> - and the system power controller recognizes it is no longer in the "Standby"
>> >> state
>> >> - hence there will be no WOL function available...
>> >
>> >WOL and "boot on power restore" are two different things. What you say is
>> >true for WOL, but with power removed, the real time clock in the BIOS is still
>> >active. All that is needed, is a circuit to turn on the power supply when
>> >mains power is restored. Some BIOSs do have this circuit. The BIOS can
>> >then respond to a WOL request.
>> >
>> >Virg Wall
>>
>> No, that won't give you WOL. The bios switch you're referring to cannot return
>> the system to the *Standby* state, so there's no way WOL will function.
>
>It doesn't need WOL--the system is fully up.

And that's *not* WOL, which was the whole point of the thread, eh?

That's simply "Power Up after AC loss", already noted...

/daytripper

daytripper wrote:
>
> On Wed, 07 Jan 2004 00:21:38 GMT, V W Wall <(E-Mail Removed)> wrote:
>
> >daytripper wrote:
> >>
> >> On Tue, 06 Jan 2004 06:12:05 GMT, V W Wall <(E-Mail Removed)> wrote:
> >>
> >> >daytripper wrote:
> >> >>
> >> >> On Tue, 06 Jan 2004 01:34:35 GMT, H Brett Bolen <(E-Mail Removed)>
> >> >> wrote:
> >> >>
> >> >> >My motherboard ( supermicro x5dal-g) has wake on lan which normally
> >> >> >works fine.
> >> >> >
> >> >> >However if power is removed ( ie I shutdown normally, unplug
> >> >> >it, then plug it back in ), the machine does not wake up.
> >> >> >
> >> >> >Has anybody had a problem with this ( or got it to work)?
> >> >> >
> >> >> >I suspect that it is not a problem with other adaptors.
> >> >>
> >> >> Nobody with a properly designed motherboard will get the above scenario to
> >> >> work - because:
> >> >>
> >> >> - WOL "wakes" only from the "Standby" state,
> >> >> - and the "Standby" state depends on memory data being kept alive.
> >> >> - When you lose the mains power to the system, the memory data is lost
> >> >> - and the system power controller recognizes it is no longer in the "Standby"
> >> >> state
> >> >> - hence there will be no WOL function available...
> >> >
> >> >WOL and "boot on power restore" are two different things. What you say is
> >> >true for WOL, but with power removed, the real time clock in the BIOS is still
> >> >active. All that is needed, is a circuit to turn on the power supply when
> >> >mains power is restored. Some BIOSs do have this circuit. The BIOS can
> >> >then respond to a WOL request.
> >> >
> >> >Virg Wall
> >>
> >> No, that won't give you WOL. The bios switch you're referring to cannot return
> >> the system to the *Standby* state, so there's no way WOL will function.
> >
> >It doesn't need WOL--the system is fully up.
>
> And that's *not* WOL, which was the whole point of the thread, eh?

You left out this part of my answer:

"You can set the power management
to go to "Standby" if you wish to wait for a WOL."
>
> That's simply "Power Up after AC loss", already noted...
>
> /daytripper

Virg Wall

Hi
I'm using WakeOnLAN and I've some questions.
I would like to know :

- When you enable WakeOnLAN in the Windows driver. Where is saved this
parameter ? In ACPI Tables ? In Windows Registry ? In a Network Card Memory
?

- At shutdown, the NIC puts into a WakeOnLAN mode ? or just in a certain
electrical state which allows WakeOnLAN ?

- If I understand what you say first, after a powerfailure, when electricty
comes again, the PC isn't in Standby state. But is the WakeOnLAN enabled at
this moment ?

Excuse me for my english...
Thanks

daytripper wrote:

> On Tue, 06 Jan 2004 06:12:05 GMT, V W Wall <(E-Mail Removed)> wrote:
>
>

>
> In addition to the requirement I provided, I left out at least one other
> critical need for WOL to function. Think about how WOL works and you should
> quickly arrive at the correct conclusion...

>
> /daytripper (hint: the bios has nothing to do with it...)

ok I'll bite.

what? ( another pc, power, ethernet)