[maemo-users] Lock, sleep, power-down

From: Andrew Daviel advax at triumf.ca
Date: Thu Jun 5 23:11:57 EEST 2008
On Thu, 5 Jun 2008, Ryan Abel wrote:

> Just ask lcuk, connecting to an access point that doesn't support
> powersaving will bring your battery life down to about 2 hours. I get
> about 60 hours out of my N800 with Bluetooth on and wifi connected
> (WRT54G with tomato).

I had some problems where the battery connections shook loose inside the 
battery pack, causing my tablet to reboot unexpectedly and not charge 
properly etc. So I was looking at the charging process trying to figure 
out what was wrong, and then out of curiosity using the 
battery-status script from http://nitapps.com/ and logging the output.

I hadn't realized that the AP is part of the power-saving scheme; there 
is a power-save option on the tablet under advanced/other in the 
connection manager. If unchecked, battery life drops from 100 hours to 7 
hours on my APs (Dlink at home, Proxim at work). I tried setting the WiFi 
to 10mW but it didn't make much difference.

I agree; the backlight should turn off. With the light on, I estimate 9 
hours battery life.


Andrew Daviel, TRIUMF, Canada

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