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Posts: 45 | Thanked: 30 times | Joined on Feb 2010 @ Germany
#1
Recently my n810 looses charge when idle. I need to fully charge it in the evening to even hear the alarm in the mornig. And then it is at like 50%. It won't survive 24 idle hours. That's about 1/10 of what it should be.

I have kernel 2.6.21-omap1 #3

I used to have ASUI installed and it reported drain rates around 5%, which is also 10 times of what it should be. However, ASUI showed the CPU lowering the frequency when idle and a cpu load around 5%, all nice and dandy. ASUI is now uninstalled.

I tried with two different batteries and saw comparable drains.

As far as I can tell the battery drain is normal when the device is busy, i.e. I get a few hours busy time and not 1/10 of that.

I dual booted into a pretty much vanilla installation and there I have the same problem. So I wonder what these two installations have in common. Well there is
  • The harware
  • The initfs and the kernel
  • The swap
Did I miss anything?

As for the swap, I just recreated it, but I don't yet have results.

I monitored the loadaverage overnight every 5 minutes along with the battery voltage and percentage. Load average was close to 0.00, occasionally 0.05 and very rarely in the 0.10 area. Still the battery lost both "voltage.current" and "percentage".

Two other strange observations:
  • After a reboot the battery indicator reported 5 days/3 hours. After another reboot it showed 10 days/4 hours
  • In my usual installation the battery indicator shows no animation when charging. In the vanilla installation it does.

Is there a possibility, that the battery is just okay and my n810 only thinks it is draining?

Can you think of any hardware related issues, which could cause this drain.?

Or can you think of any other reason
 

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