<html><head><style type='text/css'>body { font-family: 'Arial'; font-size: 10pt; color: #000000}</style></head><body>I've tried multiple times with no success.<br><br>----- Original Message -----<br>From: "Tomas Riveros Schober" <triveros@enable.cl><br>To: "List for Openmoko community discussion" <community@lists.openmoko.org><br>Sent: Wednesday, October 1, 2008 8:26:57 AM (GMT-0700) America/Denver<br>Subject: Re: dead battery<br><br>try again and it will eventually work....the usb cable connected to the <br>computer is usually the way to go...and when it boots, quickly swap it <br>to the ac charger...at least that's what i just did (my neo died during <br>the night)<br><br><br>Vince M. Clark escribió:<br>> Well, I'm out of options. I left my fr plugged into the trickle <br>> charger overnight. Still won't boot.<br>><br>> Then I read this last post, about removing the battery long enough for <br>> a reset, plugging into USB for 5-10 min, unplug/pause/plug back in. <br>> Still won't boot.<br>><br>> The only thing I haven't done that was recommended in this last post <br>> is to use the latest u-boot. Unfortunately I cannot do this until I <br>> get it to boot. Guess I will wait for my external charger to arrive.<br>><br>> Should I be concerned that this isn't just a battery issue and maybe <br>> my fr is dead?<br>><br>> ----- Original Message -----<br>> From: "William Kenworthy" <billk@iinet.net.au><br>> To: "List for Openmoko community discussion" <br>> <community@lists.openmoko.org><br>> Sent: Wednesday, October 1, 2008 12:01:52 AM (GMT-0700) America/Denver<br>> Subject: Re: dead battery<br>><br>> These are my understandings from lots of reading and previous posts<br>> between myself and Andy Green and others on the subject - should all be<br>> in the archives. With 2007.2 I was hit one out of every 3 overnight<br>> suspends ending in a flat battery. At least with 2008.9 its rarer (but<br>> does happen :(<br>><br>> With the later u-boots, usb default is 100ma as soon as its plugged in.<br>> This unfortunately is less than a running Fr needs. Normally as soon as<br>> the operating system is up enough, it will negotiate up to 500ma with<br>> the host, or in the case of the wall charger, read the sense resistor<br>> and see that 1A is available. When the OS is suspended, the PMU manages<br>> the charge until the battery is charged whereupon it switches off - and<br>> stays off. If the OS is running, it will cycle back on when the battery<br>> level falls to 10-20% (reports vary) as the OS can reset and renegotiate<br>> the charge level.<br>><br>> If the battery is very low (i.e., the internal fail-safe disconnects<br>> it), remove it from the phone for 30 seconds or so. This allows the<br>> fail-safe to reset (this is what I think happens based on my<br>> observations) so the 100ma can get to the battery, and also reset the<br>> phone hardware - in particular the GSM modem which is directly connected<br>> to the battery and is thought to be root cause by Andy Green - possibly<br>> goes into a wierd state as power drops as well, preventing restart until<br>> reset.<br>><br>> The power rail of course drops due to the inrush current much more<br>> during startup with a low battery than normal, causing one chip (USB I<br>> think) to detect a dangerously low voltage and issue a shutdown. So you<br>> cant get the phone to boot until the battery has had a few minutes of<br>> charge.<br>><br>> In my case, USB to my laptop or a desktop machine does it.<br>> Remove/pause/replace battery<br>> plug into USB for 5-10 minutes<br>> remove/pause/replug USB cable and normal boot will happen within a few<br>> seconds.<br>><br>> The wall charger should work as well, but on my one try it didnt -<br>> possibly because the u-boot wasnt new enough at the time.<br>><br>> Recommendation - use a late (latest!) u-boot.<br>><br>> BillK<br>><br>><br>><br>> On Tue, 2008-09-30 at 22:13 -0700, Michael Shiloh wrote:<br>> > > Vince,<br>> > > When my battery died I plugged my phone into the OpenMoko <br>> supplied<br>> > > charger, started it using NOR boot, leaving it at the boot menu <br>> until it<br>> > > timed out (repeat that twice) then I was about to select boot from <br>> the<br>> > > NOR menu and after a few extra seconds the phone booted.<br>> > ><br>> > > -Shawn<br>> > ><br>> ><br>> > I'm confused. I thought that we didn't turn on the charger until we<br>> > booted into Linux. Am I wrong? Do we charge in u-boot, even at a low <br>> rate?<br>> ><br>> > Michael<br>> ><br>> > _______________________________________________<br>> > Openmoko community mailing list<br>> > community@lists.openmoko.org<br>> > http://lists.openmoko.org/mailman/listinfo/community<br>> -- <br>> William Kenworthy <billk@iinet.net.au><br>> Home in Perth!<br>><br>> _______________________________________________<br>> Openmoko community mailing list<br>> community@lists.openmoko.org<br>> http://lists.openmoko.org/mailman/listinfo/community<br>> ------------------------------------------------------------------------<br>><br>> _______________________________________________<br>> Openmoko community mailing list<br>> community@lists.openmoko.org<br>> http://lists.openmoko.org/mailman/listinfo/community<br>> <br><br>_______________________________________________<br>Openmoko community mailing list<br>community@lists.openmoko.org<br>http://lists.openmoko.org/mailman/listinfo/community<br></body></html>