[Bug 110784] Re: Toshiba laptop battery is drained while shut down

[viewfrom102]

I still have the problem with Jaunty on an Tosh NB100 (came with 8.04
OEM remix installed which also displays the same behaviour).

System shutdown -> Battery drains to around 10% in less than 48 hrs.

I'm still testing to see if it is an Ubuntu or BIOS thing though,
because I notice that a lot of the previous posts are from people
without access to a full BIOS dialogue....

Seemingly relevant BIOS on my NB100 (defaults from Toshiba) were:

Wake-on LAN [Enabled]
Critical Battery Wake-up [Enabled]
Wake-on Keyboard [Disabled]

Plus
USB Sleep and Charge [Enabled (Mode1)]

This last one is interesting as the documentation says it should enable
you to charge USB devices when the PC is *asleep*, but it also does it
when the PC is *shutdown*, suggesting that some power is being diverted
to USB all the time. When off the mains but *asleep*, the documented
(and expected) behaviour is to charge the device and drain the battery -
but not when *shutdown*. However I guess that with nothing connected and
the functionality remaining active even if shutdown it will cause a slow
(but faster than acceptable) drain.

I have since turned off the wake from LAN option and the Sleep and
Charge so we'll wait and see. It would be a shame to have to re-enable
Sleep and Charge each time I want to use it - but that would seem to be
a hardware issue not an O/S one.

-- 
Toshiba laptop battery is drained while shut down
https://bugs.launchpad.net/bugs/110784
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