Re: N900 no mic audio
 

Boy, the iphone fanboys are gonna loooove this...

Re: N900 no mic audio
 

I've powered on my n900 (10 min) before charging it with my laptop usb port. The mic was ok.
The next charge was in my car with my 6210Nav car charger and the little adapter from the n900. The mic is ok.
Third time, i've used the n900 charger and after the battery was fully charged, no mic until i power off and restart the n900.
Now i'll charge my n900 with all but the original charger without mic problem.

Does anyone know the usb cabling diag ? I may try to see if there is something wrong with the voltage (with my fluke multimeter).

Sorry for my bad english, i'm french.

Re: N900 no mic audio
 

Good idea.

Have a look here.

http://pinouts.ru/Slots/USB_pinout.shtml

Re: N900 no mic audio
 

I can now confirm that my mic work well only if i charge it with my car or my old 6210Nav charger. Not with the n900 one.
I can reproduce this problem at all time.

Please, do not use the nokia n900 charger if you've just received your phone. Use the usb cable with a computer or another charger.

Shadow12: thanks for the link, i will test my charger.

Re: N900 no mic audio
 

Has someone filed a bug for the mic issue? Seems to be something causing it and restarting the device brings it back. I'm talking about a bug for this mic issue and not the hardware related one.

Re: N900 no mic audio
 

The original charger give me 4.967V. Very stable until i've connected my usb powered led light. When i connect it voltage go down (4.12V) and when i remove the light it go up to 5.89V which is to much.
The problem may appear when the battery is fully charged.
I'll make other test later.

If this was a bug, why does it work with other charger ?
I think of a faulty charger.

Re: N900 no mic audio
 

not to contradict your findings, but just to let you and others know, ive been using my charger past 2 days, no problems so far.
However, chances are there some chargers are faulty, wish I had a multimeter with me now so I could measure the voltage.

But yes, usb is always the safest way to charge :)

Re: N900 no mic audio
 

Arcangeli, is this is reliably replicable, please can you file a bug on it pronto! I can't for the life of me work out why a different charger would affect the microphone, but you might just have put your finger on the problem.

If all the people with no mic need to do is get a new charger... well you see the difference it would make!

Re: N900 no mic audio
 

I've only used the Charger the N900 came with to charge it and I have no mic problems.

Re: N900 no mic audio
 

I can confirm same kind of of mic problem, it has happened at least once. When the bug was triggered, in all calls the voice of the N900 user was not heard, no matter how many call attempts or different phones on the other end were used. Not sure yet what triggered that bug. Rebooting helped.

A friend of mine says 5800 Express Music, which is a Symbian phone, with its latest firmware update has a similar bug, although the whole phone does not need to be restarted, just attempting the call again is enough to correct the problem. He said the firmware was withdrawn from Nokia Update service and he cannot downgrade.

There has been also a situation with N900 that the phone "dropped" from the network, no call went through. Restarting the phone helped.

I bet 5800 Express Music and N900 are running almost the same GSM/3G protocol stack code (isolated from Symbian and Linux) and the bug is somewhere there.

Re: N900 no mic audio
 

This all sounds pretty interesting, but I also assume there could now be two types of Mic problem. Maybe software, maybe hardware.

For example, I've not been able to get my Mic working at all, and I didn't use the charger until sometime after I found the mic problem.
I do hope that these theories are right and most of the issues can be solved somehow. But unless I'm doing something odd, I can't seem to restart and get it back. Even after charging with usb etc.
Oh well, is just my bad luck. Glad you guys are looking into things quite deeply though. It's good to see the community come together like that.

Re: N900 no mic audio
 

Bug 6455 filled.

I may make some other test and see if something appear in dmesg.

Re: N900 no mic audio
 

Does anyone know if there is a consistant work around for this at the moment. I.e. once the Mic doesn't work, (as per previous replies), is a restart usually enough to get it going again? But then a further charge potetnially causes it to stop?

I'm still trying to work out if I could be struck by this bug, or if mine is a definite hardware or other issue instead. For example, say I fully charged my n900 - would I need to run it flat and recharge with a different charger before it had the opportunity to start working correctly?

Or am I just clutching at straws and hoping my Mic problem isn't as bad as it probably is?

Re: N900 no mic audio
 

Hey Ads,

IMHO the charger may not be the issue, its probably a hardware fault or a software glitch.
Check to see my previous post what I had experienced.
For what its worth, take the battery out, restart it, make a call to you N900 from another phone. See if the mic works, now make the call from N900 to another phone.
It could be a driver loading issue, but i havent started to look into it in detail.

Ive read somewhere here, that bluetooth headset works fine, so you could use your phone with that for now.

hope it works for you mate !
else keep a close here , im sure one of us will find out the issue soon.
You always have te return and exchange option with Nokia so not to worry, just bad that you cant get to use your N900 right away !

Re: N900 no mic audio
 

Your issue sounds a little different than mine where the mic never works. Looking at dmesg is a good start. Reproduce the problem as you said you could earlier. Look for any of the "switches" that activate a different audio profile. (IE: Headphone now connected etc.)

When the mic isn't working launch alasamixer ( alsamixer -c0 for full view) Check and record all the settings to compare against when the mic is working.

When the mic is not working try changing audio profiles either by inserting a headset or changing the profile to silent etc. See if that corrects the issue.

Unless you've got an application overriding the mixer settings or something strange like that I'd start looking into my repair / replacement or return options.

Brian

Re: N900 no mic audio
 

Does yours work with a headset or earbugs/external mic?

Re: N900 no mic audio
 

Yeah I've had a play with alsamixer, and I can't be sure now, but I believe that sometimes I turn the device on and the capture device isn't active and has zero volume - then other times it is active. I'm not sure if this shows a driver issue on top of the hardware one - as either way I get no response from the mic! I've tried ammending some of the settings in line with how adding a headset affects things, but still no luck.

I do however, every now and again receive a 'pop' type noise from the speakers when replaying a voice recording or video from the camera, but I also assume that could just be the speakers kicking in ready to dish out the sound that it hasn't actually recorded!

I've tried calls in both directions and using a SIP profile too. The external earphones that came with it work well - I assume this is because they hold their own microphone and just send the signal to the device for interpreting.

I'm awaiting my call back from Nokia - but might need to give them a nudge soon. I think I'll have to seek a replacement/repair for now, but I'll let you guys know if they say anything about bugs they know of etc - I'm assured that a more technical bod is looking into it at the moment.

Re: N900 no mic audio
 

My replacement N900 has arrived. Got a few days before I have to drop my old one back in the mail so will do some testing.

I can already say in my case the charger has nothing to do with the issue. I used all the accessories that came with my broken N900 on the new one without any issue. Mic works fine on the new unit. All of my audio settings / loaded drivers etc seem to be consistent on both units. Not seeing anything out of the ordinary yet. More playing tonight - now just having fun re-configuring the device.

Re: N900 no mic audio
 

Congrats on getting your replacement dude ...

btw, how did you go about getting it so quick !? Can you post when you sent it in for replacement, and how, and like, whats the overall procedure of getting one replaced ASAP ? I'm sure there are a lot of people here who would want to know these details unfortunately .. :(

Re: N900 no mic audio
 

I didn't go through official channels to get the replacement. I initiated a return to Amazon on my broken one and ordered another from Nokia. (Ordered it on Friday it was here this morning.) Amazon was very understanding and easy to work with during the return process. Once they receive my broken phone they will credit my card back. I pre-ordered this thing back in September so really didn't want to have to wait forever for a replacement. Amazon didn't know when they would have stock and Nokia said I had to send it off to repair.

Re: N900 no mic audio
 

I picked up my N900 and lo and behold the mic isn't working. I've also found problems trying to copy music onto the device

Re: N900 no mic audio
 

Oh no. I'm sorry to hear that. This club is beginning to get less and less exclusive! Though I suppose that will alwys be the way now the device is actually getting out there.

If you haven't done so already, I recommend reading at least the latter parts of this thread as some people have noticed how reboots or using different chargers can help. It's probably a long shot, but if you are caught by the bug instead of the bad hardware, then it can only be a good thing!

All the best to you. Although you might need that in getting a replacement too! I'll be calling Nokia back tomorrow . I expect it'll be a send for repair job, but after thinking about it, maybe it isn't so bad as at least I know this device hasn't got other faults (touch wood), and not knowing what the stocks are like, it may even be the quicker turn around!

Re: N900 no mic audio
 

i just got my from nokiausa, and the first thing i checked was if the mic worked and it did ^_^

Re: N900 no mic audio
 

Lucky you. What a pain in the bum, my mic's not working and Nokia have not got any to replace my device with ...... MPD / CPW / OMG ?? What to do ? .... The acronyms go on !!!

Re: N900 no mic audio
 

My N900's mic isn't working too.

I purchased it from Nokia Spain online shop. I'm very disappointed, I can't believe that the quality tests from Nokia didn't test the microphone.

Is there any software solution out there, or is this a hardware problem?

Re: N900 no mic audio
 

I've had the intermittent mic failure problem twice now. Reboot has always fixed it. I'm always charging with the included mains charger (not usb from computer). It would be interesting to be able to duplicate it at will, but I've not had enough time to test...

Re: N900 no mic audio
 

My failure is constant. My mic simply doesn't work, ever. I've already reflashed with the latest version and everything.

Re: N900 no mic audio
 

I've requested a RMA with Nokia Spain Online Shop... I'm tired of this thing.

Re: N900 no mic audio
 

Having also problems with the mic dropping out. I'm not sure but this seems to happen especially if I have been using regular headphones(no mic) with the device. Restarting brings the mic back. I'll test this better later today.

Re: N900 no mic audio
 

I've had the intermittent mic failure problem once I think, It could have been the other end as it was a mobile. Rebooted the phone and it was back to normal again. I think the intermittent mic problem is software related.

How is everyone getting on with there replacements?

Re: N900 no mic audio
 

I've already sended my N900 to Nokia Spain Online Shop. They say I'll get the new one IN THREE WEEKS! This is a complete shame...

Re: N900 no mic audio
 

I'm trying to package mine up to send for repair in the UK now. Nokia informed me that a replacement would take at least 3 months! I can't see the repair going smoothly either - but there is always hope! They say the repair should take no more than 7 days - I just hope they are right and the engineers don't get overly interested in this rare device that they take it apart and it comes back with more faults than it went with!

(Must think more positively!)

Re: N900 no mic audio
 

I read through half of the thread and didn't see this mentioned... is anyone having the issue where the mic works, but the mute button always has a red slash through it?

Re: N900 no mic audio
 

I have a feeling this is always the case - maybe someone can correct me - but I believe it is probably working fine even though the mute has a line through it - it looks as though the button only changes it's shade - as if pressed in when muted, but normal colour when not muted (i.e. the same picture though).

It probably doesn't get confusing if the microphone works, but it definitely confused me when testing my microphone! Maybe we can push for getting the actual picture to change - i.e. cross out when muted, no cross when it's active.

Unless of course I am talking rubbish, but can't test it because of my microphone!

Re: N900 no mic audio
 

yes, that icon is the mute button, it's normal. (my mic works and i can see it)

Re: N900 no mic audio
 

My N900 from NokiaUSA also has a dead mic, very disappointed. They better replace it quickly or I'll have to drive to the Chicago store and throw a tantrum.

Re: N900 no mic audio
 

doesn't that seem a little silly though? should the slash be there when it is actually MUTED? hopefully they fix that

Re: N900 no mic audio
 

Something definitely needs fixing ;)

Re: N900 no mic audio
 

I'm approaching 2 hours on the phone (most of it being crappy jazz music) trying to get an RMA from NokiaUSA, this is quite frustrating.

Re: N900 no mic audio
 

The Nokia Spain shop is a complete disaster: with luck you can reach one competent person, that guides you through the RMA process. I understand that the online shops are outsourced so this is not a direct responsability of Nokia.

In my case: I must put the N900 with ALL the gifts (BT headset and USB battery) in a box, they send to my email a sticker that I must stick to the box. Take that box to Correos (the national postal service in Spain) and wait at least THREE weeks to get the new N900.

Other companies, send an UPS courier to your door to get the box and send the replacement equipment (computer, batery, etc.) in the exact moment that the box is received back.