maemo.org - Talk - USB problem with N900

maemo.org - Talk (https://talk.maemo.org/index.php)

- Nokia N900 (https://talk.maemo.org/forumdisplay.php?f=44)

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

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?

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 ....

Re: USB problem with N900

Thanks handaxe.

lsusb gives

Bus 001 Device 001: ID 1d6b:0002

What does this mean?

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.

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

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.

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...

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.

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.

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: