Battery Lifetime

[Al Johnson]

On Wednesday 16 July 2008, Adam Talbot wrote:
> I am not sure what you are referring to as "bullshit."  I have a
> FreeRunner, and am getting about 7 days of run time from it.  In the
> last 10days, sense I got it, I have only needed to charge it once. If
> you think this is crap, then prove me wrong!  Log into your FR and
> execute an 'apm -s'.  Give it 24 hours then hit the power button.  It
> should come up in about 2 seconds, then check you battery health.  If
> you want exact numbers run 'apm'.   I open this challenge up to every
> one.  What are your number for a 24 hours suspend?  Battery
> before/after.

Subject to wakeups caused by cell reregistration this is true. This isn't a 
complaint - keep reading ;-) It does a wake to full backlight too, which is 
distracting and wastes power

> Yes, suspend is unstable, it does not always wake, but nothing a reboot
> does not solve.

That's currently the crux of the problem, and why I don't yet use suspend. It 
resumes on cell registration messages, and each resume is another chance to 
fail. It also has to resume to accept a call, and not being able to reliably 
resume makes it an unreliable phone.

This covers kernels built with mokomakefile up to last week. I've not tried 
anything more recent yet. However a quick look at the kernel list archives 
will show the kernel devs are fully aware of these problems and are working 
to fix them. Thanks guys! This gives me confidence that before long we'll 
have reliable resume and hence decent battery life. In the meantime I'll keep 
working in areas I can do something useful.

> -Adam
> P.S.  Stop complaining and start helping.

I wish more people felt that way :-)

> On Wed, 2008-07-16 at 16:51 +0200, thomasg wrote:
> > Where ever you think you might have heard this: it's bullshit.
> > Complete bullshit.
> >
> > On Wed, Jul 16, 2008 at 4:19 AM, Scott Derrick <scott at tnstaafl.net>
> > wrote:
> >         I'm amazed that more isn't being said about the battery
> >         lifetime people
> >         are seeing?
> >
> >         I just read an article in Information Week that cited a large
> >         poll
> >         concerning users of mobile devices.  What was the number 1
> >         issue, far
> >         and above any other issue people are concerned about and want
> >         to see
> >         improvement.  Yes, battery life.
> >
> >         The times I've seen posted here are pathetic!  8 hours of
> >         standby!
> >         Christ, my MotoQ has almost 8 hours of active phone time!  8
> >         hours of
> >         standby makes the FR a toy at best.
> >
> >         I realize that a lot of people are just trying to get the unit
> >         to accept
> >         a sim card, or make a call,  get a gps fix, etc..  But I
> >         seriously can't
> >         use it as anything but a desk toy with that kind of battery
> >         life.
> >
> >         Is there an ACPI or some other kind of power monitor built in
> >         that is
> >         granular enough for somebody to work on this problem using
> >         software?
> >
> >         Scott
> >
> >         --
> >
> >         -
> >            Rightful liberty is unobstructed action according to our
> >         will within limits drawn around us by the equal rights of
> >         others. I do not add "within the limits of the law," because
> >         law is often but the tyrant's will, and always so when it
> >         violates the rights of the individual.
> >
> >            Thomas Jefferson
> >
> >
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> >
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