>> 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