[maemo-users] [maemo-users] Battery Benchmarking?

From: Igor Stoppa igor.stoppa at nokia.com
Date: Wed Jan 10 14:03:34 EET 2007
On Wed, 2007-01-10 at 12:15 +0100, ext Simon Budig wrote:
> Igor Stoppa (igor.stoppa at nokia.com) wrote:
> [snipped helpful description of power saving]
> > Also because N800 doesn't have a cover, but certainly that doesn't
> > prevent us to do the very same power saving that was already available
> > on 770. :-D
> > 
> > The cover would just be the cause for an _immediate_ rather than timed
> > screen blanking.
> I believe Nokia is missing a psychological factor here. Putting the
> cover on the 770 allows the user to forget about it. He finished using
> it and it is kind of stored away safely, it won't distract him.
> The N800 has no equivalent. When you stop using it, its screen stays
> lighted for a while - "wasn't there something else you wanted to use me
> for?", it still demands a certain amount of attention. Then it switches
> the light off at some point - if it is lying around in your vincinity
> this is another visible intrusion that you'll notice even from the
> corner of your eyes. Plus it - at least the prototype I've seen - keeps
> blinking the blue LED in the cursor pad. Not sure what this is supposed
> to indicate. Active Network connection? "not really switched off"?

No, the LED is off by default and the power-savvy user will wisely keep
it off and even switch it off if it gets accidentally enabled.
If you are more interested into running your device for longer time than
having that disco effect, keep it off.

The LED is meant to tell you, at basic level, "I'm alive even if the
screen is blank". Plus some other things like "You have email/You have
missed calls".

> I am aware that Bluetooth&Wlan power management is very good and that
> it probably is not that relevant for power management to explicitely
> kill all connections when putting the cover on the device.

yes, arguable choice, but it can be disabled. 770 wasn't explicitly sold
as always-on and therefore connectivity got killed by default.
UI and marketing choices ....

> However it sometimes is convenient to have the Wlan and Bluetooth
> connections cut off when you explicitely put the cover on the 770.
> Putting the cover on the 770 then gives the reassuring feeling of
> "nobody can mess with it remotely, there certainly is no pending stuff
> running there". I guess the only option to do this on the N800 is the
> flight mode, which of course requires actively reenabling this stuff
> when you want to use it again. Certainly not as smoothely integrated
> with the workflow as with the 770.

Sorry if we have undermined your mental landmarks, but you just have to
adjust to the always-on concept. That's the fashion of the day.

> At least these are my thoughts regarding the cover issue - it is a
> psychological thing and I am a bit sad that Nokia apparently abandoned
> this concept.

Yes, we gave up the shrink division and hired more developers :-D
No, unfortunately that's only my wild dream.

Cheers, Igor

Igor Stoppa <igor.stoppa at nokia.com>
(Nokia M - OSSO /Helsinki Finland)

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