Comment 59 for bug 110784

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.