Battery drain with Diablo 4.2008.23-14

Hello, maemoers!

The battery of my N810 lasts a day after reflashing it with Diablo
version 4.2008.23-14.

Really I don't know why this happens. I've googled and seems this
problem is reported in several places.

Moreover, after a full recharge, I've flashed it, put the device in
offline-mode and removed the MMC card.

Without using the device at all, after one day it powers off due to lack
of battery.

I've repeated the process several times, even uninstalling all programs
that comes with flash, and no luck.

Any clue about why this happens?

Hi,

ext Juan A. Suarez Romero wrote:
> The battery of my N810 lasts a day after reflashing it with Diablo
> version 4.2008.23-14.

What packages you've installed on top of it?


> Really I don't know why this happens. I've googled and seems this
> problem is reported in several places.
>
> Moreover, after a full recharge, I've flashed it, put the device in
> offline-mode and removed the MMC card.
>
> Without using the device at all, after one day it powers off due to lack
> of battery.

This usually means that some process in the device is waking up
at about second interval (which doesn't really show up in top
unless it does also something else).

When the device is in offline mode with MMC out, if you run "top" in
XTerm, does anything else besides the top, xterm (maemo-launcher) and
Xomap show up using *any* CPU?

What if you disable all Home applets and close all applications
also (if you already haven't)?


> I've repeated the process several times, even uninstalling all programs
> that comes with flash, and no luck.
>
> Any clue about why this happens?

Have you added multimedia (audio, video) files to the internal
memory card?


- Eero

On Mon, 2008-08-11 at 12:26 +0200, ext Juan A. Suarez Romero wrote:
> Hello, maemoers!
>
> The battery of my N810 lasts a day after reflashing it with Diablo
> version 4.2008.23-14.
>
> Really I don't know why this happens. I've googled and seems this
> problem is reported in several places.
>
> Moreover, after a full recharge, I've flashed it, put the device in
> offline-mode and removed the MMC card.
>
> Without using the device at all, after one day it powers off due to lack
> of battery.
>
> I've repeated the process several times, even uninstalling all programs
> that comes with flash, and no luck.
>
> Any clue about why this happens?

Do you have the R&D mode enabled? It can drain the battery in a day.

BR; Kimmo

>
>

On Mon, Aug 11, 2008 at 12:13 PM, Kimmo Hämäläinen
<kimmo.hamalainen@nokia.com> wrote:
>
> Do you have the R&D mode enabled? It can drain the battery in a day.

It can? Previous information has been that R&D mode on its own (i.e.
without enabling the serial console etc.) has no effect on battery
life; and solely enables `sudo gainroot'.

What does "plain" R&D mode do which affects battery so greatly?

Thanks in advance,

Andrew

--
Andrew Flegg -- mailto:andrew@bleb.org | http://www.bleb.org/

On Mon, 2008-08-11 at 14:09 +0300, Eero Tamminen wrote:
> Hi,
>
> ext Juan A. Suarez Romero wrote:
> > The battery of my N810 lasts a day after reflashing it with Diablo
> > version 4.2008.23-14.
>
> What packages you've installed on top of it?
>

None. As I said, I've reflashed it and nothing more. Even I've tested it
by uninstalled applications that come with flash. No luck.

> When the device is in offline mode with MMC out, if you run "top" in
> XTerm, does anything else besides the top, xterm (maemo-launcher) and
> Xomap show up using *any* CPU?

No, nothing.

>
> What if you disable all Home applets and close all applications
> also (if you already haven't)?
>

After reflashing it, I've powered on device, and left in standby-mode. I
didn't open any application, nor aplet.

>
> > I've repeated the process several times, even uninstalling all programs
> > that comes with flash, and no luck.
> >
> > Any clue about why this happens?
>
> Have you added multimedia (audio, video) files to the internal
> memory card?

No. Even I've formatted the internal card to have nothing.

On Mon, 2008-08-11 at 14:13 +0300, Kimmo Hämäläinen wrote:
> Do you have the R&D mode enabled? It can drain the battery in a day.
>

Sure? Yes, I've R&D mode enabled. But I've been using that mode in
previous flashes, and never had any problem.

K.R.

On Mon, 2008-08-11 at 12:17 +0100, ext Andrew Flegg wrote:
> On Mon, Aug 11, 2008 at 12:13 PM, Kimmo Hämäläinen
> <kimmo.hamalainen@nokia.com> wrote:
> >
> > Do you have the R&D mode enabled? It can drain the battery in a day.
>
> It can? Previous information has been that R&D mode on its own (i.e.
> without enabling the serial console etc.) has no effect on battery
> life; and solely enables `sudo gainroot'.

And that should still hold true, afaik

> What does "plain" R&D mode do which affects battery so greatly?

Nothing unless somebody had the bright idea to hook something to the
plain R&D mode flag. Which i really hope is not the case.

Kimmo: can you please detail?

--

Cheers, Igor

---

Igor Stoppa
Maemo Software - Nokia Devices R&D - Helsinki

RD-Mode is an interesting one. All enabling it does is set a flag in the
CAL. The bulk of what happens in in /mnt/initfs/linuxrc and
/etc/rc2.d/S99ttyusb0 which just read that flag and do things if that flag
is set.

On Mon, 2008-08-11 at 12:04 +0000, Igor Stoppa wrote:
> On Mon, 2008-08-11 at 12:17 +0100, ext Andrew Flegg wrote:
> > On Mon, Aug 11, 2008 at 12:13 PM, Kimmo Hämäläinen
> > <kimmo.hamalainen@nokia.com> wrote:
> > >
> > > Do you have the R&D mode enabled? It can drain the battery in a day.
> >
> > It can? Previous information has been that R&D mode on its own (i.e.
> > without enabling the serial console etc.) has no effect on battery
> > life; and solely enables `sudo gainroot'.
>
> And that should still hold true, afaik
>
> > What does "plain" R&D mode do which affects battery so greatly?
>
> Nothing unless somebody had the bright idea to hook something to the
> plain R&D mode flag. Which i really hope is not the case.
>
> Kimmo: can you please detail?

I don't know the details. Disabling R&D mode would at least eliminate
the possibility.

BR; Kimmo

>

On Mon, 2008-08-11 at 15:42 +0300, Kimmo Hämäläinen wrote:
> I don't know the details. Disabling R&D mode would at least eliminate
> the possibility.
>

Ok. I'll try it. Thank you very much.

> BR; Kimmo
>
> >
>