[maemo-users] Dealing with N900 responsiveness (or lack of thereof)

From: Aniello Del Sorbo anidel at gmail.com
Date: Thu Feb 25 13:43:35 EET 2010
Just to comment on this even if it's a little OT.
I have been using the device in GSM mode only and being always on-line
with Skype & Gtalk.

As expected, the battery lasts a lot longer and I didn't notice any
difference (of course) on using IM.



2010/2/24 Aniello Del Sorbo <anidel at gmail.com>:
> 2010/2/23 Michel Dänzer <michel at daenzer.net>:
>> On Mon, 2010-02-22 at 12:08 -0600, Paul Hartman wrote:
>>> My battery seems the same as always. If I don't make any phone calls
>>> it lasts around 13 hours at the most (I'm connected to wifi 90% of the
>>> time, phone mostly sits idle).
>> That seems very low. I can easily go for three days between charging,
>> and I've gone up to slightly more than 100 hours. I rarely make phone
>> calls, but I'm connected to WiFi (and logged into Skype and Jabber
>> accounts) at least half the time as well and regularly do package
>> installs/upgrades, SMS/IM and general tinkering.
>>> If I made phone calls the life is shorter, and especially if I used
>>> speakerphone it seems like a 5-minute call can take away 1 hour of
>>> battery life... :)
>> That's probably due to CPU usage, which IME can take a huge toll on the
>> battery. When the device is (supposedly) idle, make sure that e.g. htop
>> doesn't show any significant CPU usage by any process other than itself
>> (and Xorg and osso-xterm, if you're running it on the device display).
>> I suspect the display brightness could also make a big difference for
>> battery life, I have it at the lowest setting.
>> Also FWIW I have Bluetooth disabled and am only using GSM, not 3G, as I
>> only use WiFi for internet access.
> What I think helps you a lot getting that massively amount of battery
> usage time is switching to GSM only.
> 3G is a real resource hog. More than WiFi (as this is heavily optimized).
> Putting the LCD brightness to a lower value also helped.
> I am switching my device to GSM only and use is as normal.
> Afterall I do navigate the web only every now and then, but I mostly
> use IM and for that I don't need 3G.
> And I can always switch back to 3G is I really need something fast.
> Thanks.
> --
> anidel

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