As usual, my N810 charged during the night and I took it in the morning; it was fully charged. But after about 5 hours, when I took my N810 out of my pocket, it was quite hot and the battery was almost empty! This is surprising as I didn't have any problem the previous days. The CPU indicator was saying the N810 was idle. I only had two open applications:

• X Terminal (with no running jobs in it). This is not the first time (I use X Terminal very often). So, I doubt this is the problem.
• Notes (perhaps the first time I let it open under diablo).

Also, no wifi, no bluetooth. Any idea? Could there be a problem with some software taking CPU time only when the tablet is locked?

Modest likes to eat CPUs for breakfast...

Naah, with no network probably something else.

I'm going to call it a corrupt internal card!

But seriously, this has been covered a thousand and one times already. Please use the search first.

I don't use Modest (I read e-mail only via ssh). Concerning a possibly corrupt internal card, I've search for "corrupt" in the FAQ, and got... nothing! How can I check whether it is corrupt? I haven't got any error message and things like that, and I haven't found any error in dmesg output, and nothing during these 5 hours:

Er, FAQ?

http://tabletschool.blogspot.com/200...d-on-n810.html

I get this on occasion - sit with it charging whilst messing on the computer of an evening, then disconnect and goto bed - i disconnect wifi everynight because i *know* thats a problem with me personally.

Random mornings I have woken up and its dead.

There is a process running amock and eating CPU for breakfast, its not being killed by the watchdogs or anything.
And its not a corrupt card issue because it would be a problem all the time.

I've attempted to run top in the past and log output but it doesnt seem too good for the purpose (it could be a low but constant cpu munching, or not cpu at all, maybe wifi chip or BT chip or gps internals or something).

My best guess would be an application run earlier in the evening didnt cleanup and close everything expected which caused the drain.

Further investigation would require the oprofile kernel flags to be set (or built and flashed) and actually monitor whats happening overnight.

Lots of work though for a random rare (but annoying) occurrence.

same here, flashed diablo, set up modest ->battery drain
reflashed diablo without setting up modest ->battery drain
reflashed chinook ->all is fine again

chinook vs. diablo

diablo:
pros
agps, fingertap vs. stylustap recognition, update without flashing
cons
only a half-day battery (n810)

chinook:
pros
two days battery, for me better microb rendering (itt for example)
cons
all diablo pros

I looked at http://www.internettablettalk.com/forums/faq.php

I repartitioned my internal 2-GB card in March. This cannot be this problem.

I now remember having an almost-emptied battery a few days ago (also after a few hours during the day), and I thought this was my fault. Now, it's probably the same problem. And except once when I started a wifi connection and let it on, I've never had any such problem with chinook.

Uh, the fact that it only contains stuff for BBCode didn't give you a hint? :\

By searching I meant Google. . . .

There have been about a half-dozen threads (and more here, several posted just hours before your own :/) on maemo-users that cover pretty much everything you've ever wanted to know about Maemo battery consumption. Might be worth your while to browse through some of them.

This should get you started.

. . . and this is the search you should've performed before posting this thread.