Hi Berverly,
all if the oddities you report seem really strange i me.
It's to be special problems produced by Fujitsu.
Nine if the problems you explain ever appeared in my COMPAQ/HP tc1100.

I have always been relying on hibernation since the beginning of the
nineties - always COMPAQ notebooks and since the ACPI standard reached
the desktop computers in all if my desktop machines too.
I hardly ever shut down my systems.

There is no power drain at all when my tc1100 is in hibernation. There
is no difference when the machine is docked.
And I really do not understand the wireless issues. When the machine has
finished writing the hibernation file and is shut off, the light for
wireless is switched off and no power is consumed at all.

When you assume that the "rules" might have changed this could only mean
that Fujitsu would have made changes which do not confirm with the rules
laid down in ACPI standard.

And what you report from your friend's experience this just reflects a
combination of mistakes on his side.

All on all: If the manufacturer keeps to the standard and the user is
making the proper settings, hibernation works really fine and IMO is a
most basic feature for any portable computer.

Rainald


Beverly Howard schrieb:

>>> Only with Hibernation the power consumption is reduced to zero. <<
>
> While that used to be the case, on the T4215 it's only marginally
> better than suspend in most cases.

> Further, (and ironically) "hibernation" works well enough to
> disconnect the tablet from the ac power supply on the docking station.
>
> Research shows that it's not the only laptop with hibernation drain
> problems, so, I have quit using hibernation altogether and on the
> docking station primarly use "suspend" since the ac power connection
> is maintained in that state.
>
> Seems the "hibernation" rules have changed over the years, something I
> found out when I grabbed my tablet _off of the docking station_ to go
> out on a mobile job only to discover that the battery was completely
> dead when I tried to power it up.
>
> Some research showed that the radio's were still on _even though the
> hardware switch on the side of the computer was in the OFF position_
>
> Later I discovered that while turning the radios OFF using the control
> panel applet made a significant difference in hibernation power drain,
> but something unknown kept turning the radio back on without
> notification. Even in that state, there was observable power drain in
> hibernation compared to "shut down"
>
> Related, a friend got similarly bitten by his "wake on lan" setting...
> he suspended the computer and closed the lid after a presentation with
> the network cord still attached, then removed the cord several minutes
> later... apparently, unplugging the lan connection woke the laptop up
> before he put it in the case leading to a dead battery when he removed
> it later that day.
>
> I spent significant time on this with Fujitsu and even though it was
> escalated, they ultimately said they had no solution.
>
> Beverly Howard