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-   -   The power on/off enigma.. (https://talk.maemo.org/showthread.php?t=12863)

Surak 2007-12-29 07:23

Re: The power on/off enigma..
 
I got my N810 for xmas, was ordered from Nokia Canada dec 11, arrived dec 13. I love it.

My unit can be finicky to start if i leave it on the charger and i dont lock it. The trick for me is to leave it on the charger while i start it, holding the button until the splash screen appears. otherwise it may not respoond.

I think the circuit board date is misleading, mine clearly says 2008.

... I really suspect that people with '2003', or '2005' boards actually have 2008 boards that have just been stamped sloppily. 3 and 5 's could easily be bad 8's.

Do you really think some crappy old board would have room for the GPS and different memory of the N810?

jaark 2007-12-29 08:57

Re: The power on/off enigma..
 
It is quite clear that the 2005 stamp is not a reference to the year, just some version of batch stamp. Mine is definately 2005 not a misprinted 2008.

bunanson 2007-12-29 09:00

Re: The power on/off enigma..
 
Quote:

Originally Posted by ericbsmith (Post 108961)
I have a question: Has anybody who is experiencing these power-on problems tried replacing the battery, either with an official Nokia one or a Hong Kong knock-off? I'm kind of wondering if the problem with the battery itself, and that the battery isn't correctly registering with the device sometimes, causing it to think the battery is dead or something...

I just returned from HongKong. Kind of curious why you mentioned HK knock-off Nokia battery. Those are selling on the street for US$20 (HK$160). And they are very RARE, not every shop carry them. Have you try to get one from HK or you try to get from ebay?


bun

bunanson 2007-12-29 09:33

Re: The power on/off enigma..
 
Just returned from HongKong, China trip. Will cook up a report very soon about the experience. During the trip, I DEPEND on my Nokia for almost anything if I can catch a Wifi signal, reports, spreadsheet, contacts, phone, skype, send and receive documents. And I carried both N800 and 770. Because of this power on problem, the N800 is absolutely NOT reliable. It failed to turn on many many times. Problem always solved, so far, by plug it in if I can find a plug out on a China street (I usually go in a Seven-Eleven and explain for 5 min or so, they always let me plug in :), nice people). On top of this, I also noticed the N800 battery lasted much less than the 770. After overnight charge and over 'average' use, whatever it means, the 770 will last a full day and get recharged when returns to hotel. The N800 will last probably only a half day and then refuse to be turned on. Problem disappeared in the morning after an overnight charge. I have observed this pattern of behavior for a continuous 12 days use. I rely on my 770, it never quit on me during the whole trip, not even once. I HATE my N800, you never know when it is going to quit!

________________________________________

770: 2007.26-8 2G MMC boot w VM off
N800:2007.26-8 2G/4G MMC boot w 128 Mb VM

bun


Edit: Looking at my own signature, the tablet with VM on has the power on problem........ummmmmmmm

sleepyN800 2007-12-29 10:09

Re: The power on/off enigma..
 
Quote:

Originally Posted by Zuber (Post 116672)
How long did you give it to show some life ?

Not unusual on Nokia phones for nothing to happen for several minutes if the battery is drained.

Zuber

Well.. i left the AC plug in for just.. let's say... 20/30 sec.. that's all.

Anyway... i left the N800 charging (in powered off mode) for more than 15 hours and still it was saying "charging".

Then i got fed up and turned it on and played with it (i love it).

Right now with 3/4 or battery left i powered off the unit and inserted the AC adapter tip and instantly started charging.

There is no rule! Hopefully tonight i will get the spare battery from my friend and run some extra testings.

It is soo bad that such a nice item (the N800) suffers from problems like these never encountered on the previous younger brother the 770 (which i loved very much).

Especially now with OS2008 its really a great device (when it's on) !!! :)

akd 2007-12-29 15:15

Re: The power on/off enigma..
 
Quote:

Originally Posted by Peet (Post 117166)
Perhaps some respected party (ITT?) should whip up a simple web questionnaire where N800 (N770, N810) owners can select the suspected hardware problem(s) and OS version(s) affected and enter the identifying hardware particulars (IC #?) of their tablet?

Of course the power issues might also be down to a lemony batch of BP-5L batteries or those flimsy chargers...

In my particular case, I got two chargers, two batteries (the original one and a "generic" one from Hong Kong) so I can tell you the problem is not related with chargers or batteries (again, at least in my case).

bunanson 2007-12-29 16:37

Re: The power on/off enigma..
 
Quote:

Originally Posted by akd (Post 117312)
...so I can tell you the problem is not related with chargers or batteries (again, at least in my case).


I humbly disagree. I think the battery is involved. See my prev post, 12 days continuous use, definitely pointed to the battery, in particular, its shorter duration after charge, < half a day on the N800 while compare with > a full day with the 770. I know it is not a scientific study, but with 12 days of experience, I stand firm on this statement. Either my particular N800 battery is defective or it is bad overall.


bun

ssmith 2007-12-29 16:54

Re: The power on/off enigma..
 
As I mentioned earlier in this thread, I tried two new Nokia batteries (purchased from two different vendors) and two Nokia chargers, and none of them fixed the problem. In my case, I am sure there was something wrong with the N800 itself that kept it from charging/being able to be turned on.

Stevie P 2007-12-30 13:52

Re: The power on/off enigma..
 
I too have had this problem with an N800.

The first time it happened I didn't pay much attention to what I'd done beforehand, but I did know that the charge was very low, so I recharged it and it was fine afterwards.

The next time it happened was after downloading some maps to the external SD card (actually an MMC card, but that shouldn't matter). Again, the charge was low, but certainly sufficient to power up the device. I tried all kinds of things, such as removing the battery and both SD/MMC cards and nothing worked. Strangely what seemed to cure it wasn't a battery charge at all, but simply sliding back the clip on the internal SD card. After that, the unit would start up fine without a recharge as long as neither card was plugged in. After running dosfsck on each card, the unit would accept the cards again despite dosfsck claiming to have done nothing.

Since then, I haven't had any further problems switching the unit on, but I have steered clear of writing to either SD card and I don't have swap enabled.

Sorry if this clouds the issue, but I thought I should share my experience.

igor 2007-12-30 14:03

Re: The power on/off enigma..
 
Few days ago i updated this [0], but apparently it went unnoticed.

[0] http://www.internettablettalk.com/wi...o_sleep_issues.

Stevie P 2007-12-30 17:11

Re: The power on/off enigma..
 
Actually, I did read the wiki page. It was not my intention to spread misinformation, and I was very careful not to infer that I had come up with an alternative solution. The fact is the unit seemed bricked and wouldn't start up despite the battery being removed and replaced several times. Something other than charging the battery, removing the battery for more than 1 minute or reflashing the device caused the problem to go away completely. Even when the device has frozen due to a problem writing map data to the MMC card, and the remaining charge has been low, simply removing the battery has been enough to allow it to recover. This definitely wasn't the case 2 days ago. This may be a H/W issue specific to my N800 or it may be something that others experience, I don't know.

ochrenaut 2007-12-30 19:41

Re: The power on/off enigma.. still havin' fun with this thing.
 
Hello again people,

Update on my n810 situation:

I haven't turned my tablet off since before Christmas, but since I have been unable to install Canola 2 I decided to see if there was a newer OS version available. Turns out 2.2007.50-2 is available now, so I gave it a try. My tablet would not start up when it needed to in order to take in the update via the USB cable and Nokia update utility program on my PC. After popping the battery for a few seconds (as has sometimes worked in the past), and then plugging in the AC adapter for a few seconds (as has sometimes worked in the past), it still wasn't turning on. Next I just left it sitting connected to the USB cable for a few minutes, and voila it just worked after three tries a few minutes apart. NOTE: multiple presses of the power button in rapid succession have NEVER worked for me, I just try one time every few minutes until it turns on.

I will be sending this defective unit in to Nokia for repair/replacement, once I can imagine being without it for a couple weeks. ;)

NOTE: While demonstrating this baby to friends and relatives during the past couple weeks, I have noticed something. People in general are not quite ready for this type of device. The only thing anyone compares it to is the iPhone, which it beats hands down in every single measure of awesomeness except auto portrait/landscape display rotation. I love that this is not a phone, but I may choose to use it as such for free or very little money using Gizmo Project or Skype. I love that I can videochat with my grandpa (me on my n810, he on his desktop computer) using Gizmo Project. I imagine a day not too far off when miniature pocket computers like these will be more popular than laptops, notebooks, or full-sized tablets. Desktop at home for hard core gaming & serious work, minimachine with you everywhere else if you choose to bring it along. My phone is my minicomputer? Come on, Apple, quit misleading people about the future of handheld tech. Does everyone need phones? Yes. Does everyone need computers? Yes. Does everyone need to replace their phone every year or two? Usually. Should everyone have to replace their computer every year or two? NO NO NO NO NO NO!

Happy New Year to my fellow tablet-loving peeps out there!

koolpappyp 2007-12-30 19:49

Re: The power on/off enigma..
 
This is a "for wharever it's worth" observation on the power issue. I just received my N800 for Christmas and also two spare Lemar batteries. What I observed was the following. When using the provided Nokia battery and charging it prior to use, I had several occurances of multiple attempts of failing to turn on, but persistant pushing of the on button- 4 to 5 times at most- turned on the N800 and it always booted up sucessfully. So you may ask, so what? Well, here is the interesting rest of the story. When I inserted the Lenmar batteries, from Staples, without charging them first (fortunately they came with a charge) I NEVER saw any start up or shut down issue......NEVER no mattter how many times I went thru the on/off sequence. However, once I charged the batteries in the N800, I USUALLY did see the on/off anomoly. So, I'm thinking and somewhat confirming the comments that there is a rat in either the HW charging circuit or in the OS charing SW that does not properly reset. This may be somewhat redundant to others but from another independent source.

Other than that the N800 is a dream. Connected Igo ultra slim BT keyboard and Anycom BT headset with ease and they both work like a charm. Haven't tried any DVDs, but there is plenty of info on this board on "how to's".

Surak 2007-12-30 20:37

Re: The power on/off enigma..
 
There seems to be hints that in some cases, the battery may not be able to supply enough power all at once to start up our toys, as if starting them draws more current in a short time than the battery can supply when it is partly drained.

There also seems to be hints that the problem may be related to a sleep mode or the device turning itself off after putting the device on charge.

Anyone who tries to start the device with many rapid button presses probably just hasn't clued in that you must hold the button until the splash screen appears, after many presses they finally accidently hold the button long enough to start it.

This is either to protect against accidental starts, or it's because holding the button gives the system the extra juice it needs to fire up, like the ballast on a fluorescent light.

Just to repeat my example, since it does not appear to have been acknowledged ...

If I put my N810 on charge and walk away without locking it, come back later, it will always be OFF when i return. take it off charge and try to start it properly by holding the button down ... it will not start. If I put it back on charge, it will start.

If I put my N810 on charge and walk away without locking it, come back later, it will always be OFF when I return. leave it on charge and try to start it properly by holding the button down ... it WILL start.

If I lock my N810, then put it on charge (or put it on charge and then lock it), come back later, it is always fine when I return, whether or not I take it off charge. It is not off, but in a low power mode. I simply unlock it and carry on. It will be charged up, and my emails, RSS feeds, and weather will already be up to date.

If while not on charge, I intentionally shut the device off and restart it properly by holding the button down ... rebooting it, without putting it on charge. It always starts up fine.

So, for me, the problem relates to:
- Leaving the device powered on but not locked when putting it on charge, leaving it to turn itself off when it has sat idle long enough while on charge.

Which again means the problem is either related to the self powerdown / sleep modes, or that it is expecting to see the same current available when it starts up as it had available when it shut off while on charge, or that there are times when the battery can not supply enough current at once to fire it up, ... our own little 'Apollo 13' problem.

Maybe a black splash screen would have made more sense :)

koolpappyp 2007-12-30 20:51

Re: The power on/off enigma..
 
"If while not on charge, I intentionally shut the device off and restart it properly by holding the button down ... rebooting it, without putting it on charge. It always starts up fine."

I do the same, but upon intial charge of any battery, the N800 does not consistantly power up the first time while HOLDING down the button. after it boots the first time the "problem" goes away. BTW, not all recharges do I see the "problem". I the N800 is always powered off when I charge it. (I use the spare batteries as necessary, which has not been often, I seem to get a good amount of use out of them before they show low level.)

I only posted another observation for consideration. I don't see this as a big deal for me, just a slight annoyance that should not be there.

bunanson 2007-12-30 22:28

Re: The power on/off enigma..
 
Quote:

Originally Posted by koolpappyp (Post 117971)
I don't see this as a big deal for me, just a slight annoyance that should not be there.

May be it is a "slight annoyance" for you. I use to think that too. As I use my tablet almost exclusiverly either at home or in my office. I plug the damn thing in and the problem solved. Not if you are travelling on the street in the wild wild east, with your whole documents, communication, maps, email, Skype phone depend on it and it wont *&$^%$ turn on. Try that, you will realize this is not a small matter :mad:! I carried my 770 as it has NEVER failed me.


bun

Steph69 2007-12-30 22:36

Re: The power on/off enigma..
 
Read here http://www.internettablettalk.com/fo...ad.php?t=14107

igor 2007-12-30 22:58

Re: The power on/off enigma..
 
This is something that maybe is not so clear, so please forgive me if i'm repeating the obvious.
When the tablet is charging, it _is_ on.
It stays on as long as the charger cable is plugged in (and the cable connected to the power lines, of course).
This fact has probably already been stated elsewhere and should be obvious by the different time it takes to boot from real off (device off and no charger connected) and from "acting dead".
Another hint is the fact that the charging animation doesn't start immediately, when plugging in the charger in a _really_ off unit. It's because it is actually performing the first phases of the booting.

Similarly, when the charger is disconnected and the device was not showing the desktop (meaning that it was in acting dead mode), it will power off for good.

Pressing the power button right after unplugging the charger is likely to not obtain the desired effect (turning on the device, which is actually performing a shutdown sequence).

Said this, it is possible that there is either some sw or (somewhat unlikely on large scale) hw bug.

The simplest (and quickest) way to turn on a device that is in charging/acting dead mode, is to press the power button and let the unit complete the booting sequence _before_ pulling the cable.

Since there are 3 different watchdogs (1 sw plus 2 hw), it is possible that they kick in and generate a reset, in case of lockup due to some race condition. This can explain why sometimes the time it takes to reboot after becoming unresponsive seems to change. It's because the lockup can happen at any moment within the wd period and therefore it will persist for all the remaining part of such period, then the wd will generate a reset.

koolpappyp 2007-12-30 23:15

Re: The power on/off enigma..
 
"May be it is a "slight annoyance" for you. I use to think that too. As I use my tablet almost exclusiverly either at home or in my office. I plug the damn thing in and the problem solved. Not if you are travelling on the street in the wild wild east, with your whole documents, communication, maps, email, Skype phone depend on it and it wont *&$^%$ turn on. Try that, you will realize this is not a small matter ! I carried my 770 as it has NEVER failed me.


bun"
I didn't say it wasn't a problem for all, just that I do not think, for me it's a big deal. :) BTW, since I've been using the Lenmar batteries, I cannot reproduce the power enigma. So clearly I do not have an issue any longer. The n800 works perfectly, all the time. Wierd, but true. I am still not saying it's a Nokia battery issue, but the facts are.....?????

Other strange N800 phenomina is that sometimes during boot up, the blue bar appears scrolling across the bottom of the screen and sometimes it does not, but in all cases it boots successfully.

In any case, I'm done with this thead for now. Keep a happy face and your N800 will be happy too. :D

Milhouse 2007-12-30 23:29

Re: The power on/off enigma..
 
This problem is all strangely familiar... the first release of OS 2007 back in Jan 2007 had a different but equaly annoying boot problem (boot loop, bug #957) and it seems like OS 2008 has suffered a similar fate. :(

A temporary workaround appears to now exist (post #137 - thanks Steph69) and it's only a matter of time until Nokia/Maemo identify the root cause and propose a permanent software solution. :)

sgosnell 2007-12-30 23:44

Re: The power on/off enigma..
 
I haven't seen any problems at all with turning the N800 on. I sometimes shut it down via the power button and the menu, and sometimes by just holding the power button. Either way seems to work. I turn it on by holding the power button for a few seconds, until the LED is steadily on. I turn it off several times a day, because the boot time is so short and I prefer to keep the battery charged instead of running it down, which it will if the wifi is kept on, and it's easier to turn the whole device off than to turn off the wifi, at least for me. Maybe I'm lucky, but I've never had a single problem with it coming back on. It's absolutely reliable for me. Just pressing the power button won't turn it on though - it has to be held down for a few seconds.

iFroggy 2007-12-31 20:05

Re: The power on/off enigma..
 
Just another person with this problem, I guess. But, I hardly even got to use mine! :) Here's what happened:

After waiting for weeks, I finally was able to get an N810 from Buy.com. It arrived on the 28th. I opened it up, put the battery in and plugged it into the wall. It showed "charging" on the black screen and I left it there for a few hours. After a few hours, I turned it on and played around with the browser for maybe 5-10 minutes. Then, I shut it off and left it there, with the charging icon and text for days.

That was until a few minutes ago. It still said "charging" even after days (seemed weird to me). I unplugged it and turned it on... didn't do anything. Tried plugging it back in and turning it on. Also nothing.

It's a bit disconcerting that so many are having these issues. I was really excited about this device, but I'm thinking and returning it now. I would expect something that cost me $430ish dollars to work when I first got it. I may just return it and buy something else/it again once this is worked out. I don't want to bother with various hacks to get it to turn it on when it's brand new. Frustrating.

Patrick

algi 2008-01-01 16:31

Re: The power on/off enigma..
 
I have read the 15 pages of this thread trying to find a solution for my power-on problem.
Mine seems a little different. For two times my N800 (with OS2008, last revision) did not start when I tried to power it on in the morning (first power-on of the day). No power-on problems for the rest of the day.

In both cases I opened the back cover to check that the battery was in place, I did not find anything wrong, then I re-inserted the cover, I pressed the power button again, and voila, the N800 powers on correctly.

It sounds like the action of disconnecting and reconnecting the back cover, somehow, fixes the problem.

Any idea about what causes this?
Is it a hardware problem? I can still ask a replacement.

bunanson 2008-01-01 17:50

Re: The power on/off enigma..
 
Quote:

Originally Posted by algi (Post 118845)
I have read the 15 pages of this thread trying to find a solution for my power-on problem.
Mine seems a little different. For two times my N800 (with OS2008, last revision) did not start when I tried to power it on in the morning (first power-on of the day). No power-on problems for the rest of the day.

In both cases I opened the back cover to check that the battery was in place, I did not find anything wrong, then I re-inserted the cover, I pressed the power button again, and voila, the N800 powers on correctly.

It sounds like the action of disconnecting and reconnecting the back cover, somehow, fixes the problem.

Any idea about what causes this?
Is it a hardware problem? I can still ask a replacement.

It happened to me a couple of time. I really think this is coincidental. I think the trick is, you press the power button, nothing happens, you then muck around with the back cover long enough, then power on again, now it works. I think time slack between first power button and second power button press is the active ingredient, the cover plate thing is a red herring. Dont throw tomatoes to me..........I know this is NOT a double blind study


bun

rally25rs 2008-01-03 02:06

Re: The power on/off enigma..
 
Just to throw in my experiences... I had the same prob on my 770 when I first got it, and I eventually re seated the battery (actually i had taken it out to look at the serial number sticker underneath) and then it started working perfectly! It stayed working perfectly untill the next time I removed the battery (a couple months later, again to check the serial #) and then went back to only occasionally powering on. It always turns on if plugged in, and the on/off button is always responsive when the unit is on, so I know those arent issues on my 770, so I think the battery terminals are just picky about the way they are seated.

atleta 2008-01-03 02:50

Re: The power on/off enigma..
 
I also have this problem with my n810 purchased around 04/12/2007 at buy.com. It powered up normally for the first time. I did not charge it before turning it on but the indicator showed a decent charge level. I used it for about 20 minutes without the wifi before I pluged it in then it charged normally. The batteries should be OK as the device lives up to the specs wrt the operation times. I didn't switch off the device for at least a week, at least I don't think I did. Then after at the end of a charge cycle when I removed the cable it shut down and I figured I had this problem :(.

None of the tricks listed here work, like removing the batteries or waiting for at least three minutes before trying to turn it on. The only way I can turn this thing on is putting it on the charger and waiting until it thinks so.

Today I tried a non-official charger, an nokia acp-12e from an older device, that provides less current than the AC-4U that came with the device (800mA vs 890mA) and it seems that now it takes more time until the charge sign appears. I also suspect that it takes more time if the battery is more discharged. From this I would think that the device falsely sees as if the battery was discharged too much.

However I found a bug that might be related #2290. This is also describes a case when the power button doesn't work properly. If you configure your device to go to soft poweroff when duple pressing the power button then it won't come back from a duble press. It's only able to wake up by a long press (if you configure so, of course). This might or might not be related.

Anyway it's an interesting option for those who don't send the device back (yet): configure your tablet to go to soft-off on a long press. It will come back instantly (<1 sec) on the next long press and it will prevent you from turning off accidentally and still you'll be able to save some power. (I haven't looked it up but I guess this soft-off mode is like suspend on desktops and laptops. The CPU is shut down but the memory stays powered.)

sdsdv10 2008-01-03 03:28

Re: The power on/off enigma..
 
Quote:

Originally Posted by sdsdv10 (Post 110834)
OMG, I just had to register after reading this thread. Another buy.com N800 buyer here. I ordered on 11/20 received it on 11/27. I was out of town, so I didn't get to play with it until 12/1. What do you know. I put in the battery and charge it up. I turn it on and play with the unit for about 15 minutes and then turn it off to set up my wireless router. I go back and try to turn the unit on... Nothing. I plug it in and just as other have noted, I don't even see the "charging" icon. Nothing. I pull out the battery and put it back in. Nothing. I hold the on button for >30 seconds. Nothing. I get frustrated and put the damn thing down and go eat dinner. I return, press the on button. Presto, it works like a charm. Play with it for about 1 hour, show the wife. Download her email from Yahoo. Try some video stuff, everything works perfectly. Turn it off to put the kids to bed. Try to turn it on again. Nothing... Now I am pissed! It went back to buy.com the following Monday. The replacement arrived today. Work has me out of town again, so I won't get to play with it until Saturday. We'll just have to see how it goes.

FWIW, the first one came from a buy.com wharehouse in California. The replacement was sent from somewhere in Pensylvania. I'll let everyone here know how it works out.

I just wanted to follow up on my previous post. As noted above, I RMA'd the original N800 due to the power on/off issue. The replacement came in ~ 3 weeks ago and it has worked perfectly since then. I have turned in on/off on average every other day or so, since it arrived. It has always started without incident. No funny button pushing, no removing the battery, no holding it a strange angles, no crossing of fingers, no blood scarifice necessary it just works. It has also been charging just fine. I load OS2008 the day it arrived, again without issue.

If my experience is any indication, if you have an N800 with the on/off bug either return it for replacement (if possible) or if it's still under warranty return it to Nokia for repair. I can tell you from experience, you should not be having these problems (whether based on hardware or software), as this is not how a properly working N800 should ( or does) behave. I'm not trying to cause problems with anyone, but I only suffered with these issues for ~2 days before returning mine and that was more than enough. The new N800 I received is just a joy to use. I can't wait to get a pair of 16GB SDHC cards and really trick this thing out. I wish everyone out there with this problem good luck in getting it resolved.

atleta 2008-01-03 03:38

Re: The power on/off enigma..
 
Sorry, I was wrong, the soft poweroff does not shut down the system it just seems to turn off the display and (optionally) the network interfaces.

atleta 2008-01-03 10:44

Re: The power on/off enigma..
 
Here are some more results. Now I'm almost sure that this is either a softwer bug or a software correctable one. I removed the battery for the night so that the device would ceompletely power off and the RTC backup battery would run out. When I inserted the battery 6 hours later the thing would just boot up. I switched it on and off several times and it was OK. Then I switched it off once more and when switching on, which I'm not very experienced in ;), the power led blinked and then nothing happened. I might have released the power button too early, I don't know. I'll investigate this too.

Actually the RTC backup battery seems to have lasted for about 1.5 hours vs 20 minutes as it was suggested here by someone. When I booted up the device showed 6:36 am and I removed the batteries around 5:00 am.

atleta 2008-01-03 10:48

Re: The power on/off enigma..
 
Quote:

Originally Posted by sdsdv10 (Post 119741)
If my experience is any indication, if you have an N800 with the on/off bug either return it for replacement (if possible) or if it's still under warranty return it to Nokia for repair.

Would I have been careful and patient enough not to order it from the US I would have had it replaced the following day. Now I hope that it can be solved from software and I don't have to wait for months to get it back. BTW could you tell me how much time the whole replacement procedure took from the day you sent it back?

cryptoboy 2008-01-03 23:46

Re: The power on/off enigma..
 
I just got my N810 and am having the same issue. I fully charged the battery until I got the 'disconnect the charger' message. I then pulled the charger out and thereafter was not able to power-on the device (by pushing the power button). I then reconnected the AC charger and no change the N810 is still dead (ie. black screen).

After reading this thread I found that the only way I can get the N810 to power-up is by pulling the battery out and waiting ~2 hours. After that amount of time I am then able to power the device up. I think atleta's earlier post about the RTC battery having to drain charge seems to have merit.

Quote:

Actually the RTC backup battery seems to have lasted for about 1.5 hours vs 20 minutes as it was suggested here by someone. When I booted up the device showed 6:36 am and I removed the batteries around 5:00 am.
After doing this a couple of times (what a PAIN!)

I did notice that the time was about 1.5 to 2 hours after the last time I powered it off.

One question I have...when the N810 is dead and I plug the AC adapter in I do not see any change? Is this what others are seeing? It is unclear to me as the N800 devices seem to respond to the charger?

jaark 2008-01-04 00:36

Re: The power on/off enigma..
 
Yes, when the device charges, it actually boots into a special charging mode. It technically has to be 'on' to charge even when it's 'off' (if you see what I mean). When the 810 is in a state where it can't turn on, it can't even charge.

I have initiated proceedings to return mine to Nokia.

bunanson 2008-01-04 11:06

Re: The power on/off enigma..
 
2.2007.50-2/4g/4g/int flash boot N800 from buy.com
____________________________________________

NO new info, I guess, just an update. Read only if you bored.....

My previous problem with the boot up, running 2007.26-8 can always solve with pluggin in the tablet, and I thought it is a problem with both software and hardware. Software, messed up the system requiring a hard reboot or the "sleep" issue. Hardware, the faulty switch, charger, battery etc.

I flashed my unit to 2008OS and has been running fine without any incident for 3 days, no power on-off problems and I thought, gee, I "sloved" the problem.

This morning, I installed mplayer using "test Maemo extra", after installed, I turned the "test Maemo extra" off, and the unit cannot refresh on repository, i.e., app manager hanged upon refresh. I have no choice, but to turn the unit off...............well, it almost never come on again, I used almost every tricks I know, it wont come back. I finally put the battery back in again, for a zillion time and plug it in for a longer period, 3-5 mins, and the unit suddenly spring back to life. Any new info? I guess not, but to reinforce my prev notion, that a software mess up, requiring some hard reboot will trigger the on-off problem.

One more new thought, circling around the battery, I still think battery/charger is a factor. And the battery indicator maybe at fault too, i.e., the battery indicator may show 2 squares, (50%), but infact it is bottom so the iT cannot power on by self, requiring a charge. I know, it is my guess. Is there any other way to check the battery level, other than the built-in? Linux gurus, where are you?


bun

atleta 2008-01-04 13:34

Re: The power on/off enigma..
 
Quote:

Originally Posted by cryptoboy (Post 120359)
One question I have...when the N810 is dead and I plug the AC adapter in I do not see any change? Is this what others are seeing? It is unclear to me as the N800 devices seem to respond to the charger?

Yepp. But if you're patient enough (which usually means less than half an hour) it will eventually start charging. Actually the devices behaves as if the battery was totally empty. If you read the user guide then you'll see that this is how it goes with a totally empty battery. First it won't be able to boot into this charging mode not having enough charge left. I guess in that case it does use some simple (and slow) charging electronics to give some initial charge to the battery.

I contacted NokiaCare about this problem and they told me that they were not aware of it. All of you should also mail them so that they notice it. Here is the link for the reporting form:

I also opened a bug here: https://bugs.maemo.org/show_bug.cgi?id=2707 . Please take some time to confirm and vote for it.

sdsdv10 2008-01-04 13:42

Re: The power on/off enigma..
 
Quote:

Originally Posted by atleta (Post 119851)
Would I have been careful and patient enough not to order it from the US I would have had it replaced the following day. Now I hope that it can be solved from software and I don't have to wait for months to get it back. BTW could you tell me how much time the whole replacement procedure took from the day you sent it back?

Like many others, I purchased my N800 from Buy.com. I received it on a Friday and requested a RMA on Saturday (after fighting with the crazy on/off problem for only 24 hours). I shipped it back to Buy.com on the following Monday. After that, it took about 2 weeks to get a replacement [3 days shipping back to Buy.com, about 9 days for them to notify that they had indeed received the item and 4 more days to get the replacement shipped to my home], again this was directly from Buy.com not from Nokia. As I noted in my previous message, the replacement has worked perfectly since I received. It turns on everytime I push the power button. I wish you good luck in fixing your problem (seeing as how both of my N800 had the exact same software, I just can't believe it's a software issue).

richie 2008-01-04 13:42

Re: The power on/off enigma..
 
Quote:

Originally Posted by atleta (Post 120650)
I also opened a bug here: https://bugs.maemo.org/show_bug.cgi?id=2707 . Please take some time to confirm and vote for it.

I think there is bug report already for this, https://bugs.maemo.org/show_bug.cgi?id=2673

Rich

cryptoboy 2008-01-04 15:43

Re: The power on/off enigma..
 
Well, I'm done! I'm sending my unit back today. I have not found an easy way to get the N810 to power-up once it has 'bricked'. If I keep it always in a power-on state (or standby) it seems to work fine. But I like to mess around with new apps and once I lock the device up I'm stuck waiting for 3 hours...ERRR!

I called Nokia yesterday and they also acted like they had never heard of this issue. Mine is also a Buy.com purchase so I am a bit concerned about returning it to them??? I might just get a nother defective one?

Has anyone gone the Nokia return route? How long did it take?

atleta 2008-01-04 15:47

Re: The power on/off enigma..
 
Quote:

Originally Posted by bunanson (Post 120601)
I finally put the battery back in again, for a zillion time and plug it in for a longer period, 3-5 mins, and the unit suddenly spring back to life. Any new info? I guess not, but to reinforce my prev notion, that a software mess up, requiring some hard reboot will trigger the on-off problem.

I tend to think (or hope :) ) the same. However you don't have to play with the battery or connect the charger multiple times. Just plug it in and wait. It'll boot up. I don't think that removing the battery for short periods or connecting and then disconnecting the charger plays any role here.

Quote:

One more new thought, circling around the battery, I still think battery/charger is a factor.
It doesn't seem so. But I tested with multiple chargers and batteries. I tried it with another charger of the same type that I got for my 6120. I also tried another original Nokia BP-4L battery that a friend of mine uses in his e90. I also tried my battery in his e90. His e90 worked with both mine n810 didn't boot with either. It doesn't matter which charger I use (tried several ones) while they all charge my other phones.

Quote:

And the battery indicator maybe at fault too, i.e., the battery indicator may show 2 squares, (50%), but infact it is bottom so the iT cannot power on by self, requiring a charge. I know, it is my guess.
Well, it could be but it doesn't seem so. I'm able to use the device when it shows that the battery is almost empty and it won't accidentally switch off. We actually can't turn it on with full batteries and that would indicate that the power indicator has another problem, i.e. it measures the full battery having a too low charge. While removing the battery for a few hours 'solves' the problem so you can boot with the very same charge level just by totally cleaning all internal state.

Quote:

Is there any other way to check the battery level, other than the built-in? Linux gurus, where are you?
Yepp, take a DMM (digital multimeter). But as you can see that is not the problem. Please confirm this bug in the maemo bug database. Your case seems to be quite interesting and may help to convince the developers that there is a software bug involved. https://bugs.maemo.org/show_bug.cgi?id=2707

atleta 2008-01-04 16:09

Re: The power on/off enigma..
 
Quote:

Originally Posted by cryptoboy (Post 120753)
I called Nokia yesterday and they also acted like they had never heard of this issue.

I'm very angry with them. They act as if they didn't know because _as an organixation_ they dont know about it. But they don't know about it because the CustomerDontCare doesn't do anything about te reports. I mailed Jane and Sanyi (that's a Hungarian name ;) ) you talked to Joe. I filed a bug that Kimo (Finnish name) ignored as a hardware issue, someone else mailed Bill. But _none_ of them recorded the fact in any system. The hungarian dontcare line told me that they don't know about it because the n810 is not sold in Hungary. BTW it is sold in the EU, but never mind, the prob,em is that they don't have a defect database. At least that's what the dontcare guy replied to me. Only the service point (repair shop) has one. That's a joke. As it is a joke that they don't have a world wide warranty for a mobile device. Guess what, people carry mobile devices all over the world. Even I can check through the internet using the WLAN ID if the device has a valid warranty. The device doesn't get repaired it gets replaced. So what's the difference? I'm totally disapointed with Nokia.

Yes I have read the terms of warranty and purchased in the US despite this but still it's an unfair practice. I think they use it for controlling the prices. It's the same trick as the DVD region code.

Quote:

Mine is also a Buy.com purchase so I am a bit concerned about returning it to them??? I might just get a nother defective one?
Sure bot not too probable. Anyone can have a defective one as they don't know about the bug and have not tested the devices for this bug. Actually mine is from Walmart.

Quote:

Has anyone gone the Nokia return route? How long did it take?
I checked it. You have to send it back to their repair centre (that's in Alabama somewhere) so I guess it takes 3-5 days. Then the repair takes 7-10 days and then they ship it back (another 3-5 days). So it's 13-20 business days altogether which means 3-4 weeks. Now I bought the device about a month ago. I discovered the bug 8 days later as I didn't switch it off earlier. (Or I might have once or twice right at the beginnging but then it worked.) So even if I would have been in the US I couldn't have RMA it as it was have been over the 14 days. Actually I discovered the bug accidentally as it freezed after disconnecting the charger (I almost never turn my gadgets off).

So I bought this thing in december and during that one month the price have fallen about 40-60 USDs. Now if I send it back for a repair and don't have it with me during that time how much does it cost (not counting that I NEED IT :) )

cryptoboy 2008-01-04 17:20

Re: The power on/off enigma..
 
Well I'm taking the return to Buy.com path. I can only hope that I get a 'fixed' unit. As you all know....very frustraing as the device is great when it works!!! :mad:


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