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-   -   USB problem with N900 (https://talk.maemo.org/showthread.php?t=67761)

michaelmimo 2011-01-02 00:49
USB problem with N900
 
Hello All,

I know the USB problem isn't new (I've searched a read through a lot of posts on it) but I seem to have a peculiar problem that no one has addressed. Please be patient with me as I just joined the forum.

My N900 has been working fine for almost a year and I have been careful with the USB port. But recently, the battery was flat and the device wouldn't charge anymore - either via the wall charger or USB to PC.

The phone did not drop neither is the USB port broken - at least physically (it was perfect till the battery went flat).

I charged the battery using another phone and re-inserted it to my phone. It came on and worked fine except that plugging the USB to PC wouldn't work. Both Linux and Windows desktops won't see it - not even an alert that a USB device is connected to the desktops. Also, the wall charger is not charging the phone battery.

I tried reflashing the phone (thinking it was a software error) but I get stuck at

Suitable USB device not found, waiting

Following the the procedure (While holding the u key, connect the N900 to your computer via USB. Wait until you see a dim screen on your N900 with a Nokia logo in the middle of your screen with an USB icon in the top right corner) described in the Upgrading the tablet firmware page, I successfully get the device to the flash mode, but the systems do not see it.

Please, what else can I do?

handaxe 2011-01-02 17:11
Re: USB problem with N900
 
Perhaps a solder crack has developed; it can be just as if the whole assembly detached.
Does
Code:
lsusb
in a x-terminal show a usb device? You may need a repair ....

michaelmimo 2011-01-03 04:34
Re: USB problem with N900
 
Thanks handaxe.

lsusb gives

Bus 001 Device 001: ID 1d6b:0002

What does this mean?

michaelmimo 2011-01-03 05:56
Re: USB problem with N900
 
below is the output of lsb -v



Code:
Bus 001 Device 001: ID 1d6b:0002 
Device Descriptor:
  bLength                18
  bDescriptorType        1
  bcdUSB              2.00
  bDeviceClass            9 Hub
  bDeviceSubClass        0 Unused
  bDeviceProtocol        0 Full speed hub
  bMaxPacketSize0        64
  idVendor          0x1d6b
  idProduct          0x0002
  bcdDevice            2.06
  iManufacturer          3 Linux 2.6.28-omap1 musb-hcd
  iProduct                2 MUSB HDRC host driver
  iSerial                1 musb_hdrc
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                9
    bDescriptorType        2
    wTotalLength          25
    bNumInterfaces          1
    bConfigurationValue    1
    iConfiguration          0
    bmAttributes        0xe0
      Self Powered
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                9
      bDescriptorType        4
      bInterfaceNumber        0
      bAlternateSetting      0
      bNumEndpoints          1
      bInterfaceClass        9 Hub
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 Full speed hub
      iInterface              0
      Endpoint Descriptor:
        bLength                7
        bDescriptorType        5
        bEndpointAddress    0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type              None
          Usage Type              Data
        wMaxPacketSize    0x0004  1x 4 bytes
        bInterval              12
Hub Descriptor:
  bLength              9
  bDescriptorType      41
  nNbrPorts            1
  wHubCharacteristic 0x0011
    Per-port power switching
    No overcurrent protection
  bPwrOn2PwrGood        5 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  DeviceRemovable    0x02
  PortPwrCtrlMask    0xff
 Hub Port Status:
  Port 1: 0000.0100 power
Device Status:    0x0003
  Self Powered
  Remote Wakeup Enabled

I don't quite understand it but can you check it up if there's anything out of place?

thanks, again.

Opa 2011-01-03 10:47
Re: USB problem with N900
 
Hi,

I just had the same problem with my N900. I took it to Nokia Care and they send it to get fixed. In two weeks I got message the phone is ready to pick up. They gave me new device instead of fixing the old one. I hope this helps.

Olli

michaelmimo 2011-01-03 11:00
Re: USB problem with N900
 
Thanks Opa.

I guess I have to take mine to Nokia Care too. Problem is I bought it in US and I am currently in Nigeria. I hope the warranty extends to another country.

Anyway, thanks.

handaxe 2011-01-03 22:04
Re: USB problem with N900
 
Sorry for delay - the output of "lsusb" simply means your usb sub-system is present and as far as the OS is concerned, functional. I think it tends to point to a hardware problem as I mentioned: cracked solder /connection. How long is your warranty.... good luck to you...

michaelmimo 2011-01-03 23:37
Re: USB problem with N900
 
Okay. Nokia Care it is then.

My warranty is one year, I think, and it expires this January. Will take it there ASAP.

Thanks for your assistance.

Opa 2011-01-04 13:03
Re: USB problem with N900
 
My phone was 13 months old and they didn't even ask when it was bought. There shouldn't be any problem with waranty.

move2leeds 2011-01-04 22:57
Re: USB problem with N900
 
I too have the same problem the phone is less than 1 year Just stop charging but didnt notice as while battery was full still workin until i noticed the day it stopped charging or USB linking to PC i had no internet Connection.

I took back to carphone warehouse as thats were i purchased explained i read it was a firm ware problem but because i was now unable to charge my battery which was flat i was unable to switch on at all. The took in for repair under warrenty but contacted me 4 days later ( ON CHRISTAMS DAY!!!) to say it was water damage......which it wasnt......and the the warrenty is invalid!ARGHHHHH i spoke with NOKIA who told me to send to them....but im not very happy......:mad::mad::mad:

michaelmimo 2011-01-04 23:55
Re: USB problem with N900
 
@move2leeds: whao! what an experience. Have you sent it to Nokia and were they able to fix it?

I took mine to Nokia Care today and they've collected it for fixing. Unfortunately, they told me I don't have warranty in Nigeria as I bought the phone from US (US warranty doesn't get down here).

I'm waiting for it to be returned working perfectly.

Omkar 2011-03-16 18:05
Re: USB problem with N900
 
I am facing a similar problem. Though i have found a temporary solution to this. Wanted to describe my problem in a new thread when this thread popped up. (This thread dint show up in the power search though for some reason )

Here goes..

Connect the charger to the phone.
1.open xterm
2.type sudo gainroot
3.stop bme

it should end with waiting

4.start bme
within 10 seconds the charging notification will show. (Atleast thats what happens with mine)

Now the problem is after the battery is full and i remove the charger it still shows charging and the light keeps glowing untill i do a reboot.

Also charging works when i switch off the phone.

Does any one on the forum know what could be the problem with my phone.. Thanks a lot for helping in advance.

Omkar 2011-03-21 07:14
Re: USB problem with N900
 
Any one has any idea about the problem stated above?

handaxe 2011-03-21 08:21
Re: USB problem with N900
 
I have no exact idea, but am thinking a reflash may be something to try. You have shown the hardware is working to a great degree.

Omkar 2011-03-21 09:01
Re: USB problem with N900
 
I did reflash the device. but the problem persists. Is there any way to test if the bq24150 chip is working fine?

danramos 2011-03-21 09:51
Re: USB problem with N900
 
Jeez! I thought this was supposed to be old news by now??

ROne21 2011-03-22 00:31
Re: USB problem with N900
 
I'm having this dilemma right now....having a hard time charging it with 3 different chargers. It just won't charge at all. What to do?

Omkar 2011-03-22 04:17
Re: USB problem with N900
 
Does it charge when switched off??

handaxe 2011-03-22 08:58
Re: USB problem with N900
 
Quote:
Originally Posted by danramos (Post 972252)
Jeez! I thought this was supposed to be old news by now??
A leetle cryptic - are you saying one should search as this specific issue has an answer or ..... :)

@Omkar: I spotted this link to a script. No idea if it will help you....http://talk.maemo.org/showpost.php?p=959112&postcount=1

Omkar 2011-03-22 10:43
Re: USB problem with N900
 
Thanks.. But had used it earlier..

ROne21 2011-03-24 01:52
Re: USB problem with N900
 
Quote:
Originally Posted by Omkar (Post 972844)
Does it charge when switched off??
No....it's a hardware problem.....I have 3 different chargers and they all won't work...too loose when connected. Is there anything out there where I charge the battery off the phone?

stlpaul 2011-03-24 01:58
Re: USB problem with N900
 
Quote:
Originally Posted by ROne21 (Post 974359)
No....it's a hardware problem.....I have 3 different chargers and they all won't work...too loose when connected. Is there anything out there where I charge the battery off the phone?
yeah, just search ebay for BL-5J battery charger, they are very cheap.

danramos 2011-03-28 17:59
Re: USB problem with N900
 
Quote:
Originally Posted by handaxe (Post 972950)
A leetle cryptic - are you saying one should search as this specific issue has an answer or ..... :)
I mean, didn't Nokia already fix this problem on newer units and warranty their products enough to do a recall to fix what is clearly a design problem on their own part? Seems like this is kind of an old problem already and this should have been shaken out by now.


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