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* Odd USB problem on THOMSON PDP95FM
@ 2007-01-19 18:55 Marco Ferra
  2007-01-19 19:59 ` Greg KH
  0 siblings, 1 reply; 2+ messages in thread
From: Marco Ferra @ 2007-01-19 18:55 UTC (permalink / raw)
  To: linux-kernel

Hi kernel developers

I don't know if this is the proper list but I have a very odd problem
and it's driving me nuts for the past two days.

I have a portable mp3 player named:

usb-storage: waiting for device to settle before scanning
  Vendor: THOMSON   Model: PDP95FM Series    Rev: 0100
  Type:   Direct-Access                      ANSI SCSI revision: 04
usb-storage: device scan complete
SCSI device sda: 244288 2048-byte hdwr sectors (500 MB)
sda: Write Protect is off
sda: Mode Sense: 3e 00 00 00
sda: assuming drive cache: write through
SCSI device sda: 244288 2048-byte hdwr sectors (500 MB)
sda: Write Protect is off
sda: Mode Sense: 3e 00 00 00
sda: assuming drive cache: write through
 sda: unknown partition table
sd 0:0:0:0: Attached scsi removable disk sda

that, I think, should act like an USB mass storage disk.  I have done:

# dd if=/dev/sda of=/dev/sda.dump

sucessfully, several times.  But I can't do:

# dd if=/dev/zero of=/dev/sda

The error, all the time:

usb 2-1: reset full speed USB device using uhci_hcd and address 3
usb 2-1: reset full speed USB device using uhci_hcd and address 3
usb 2-1: reset full speed USB device using uhci_hcd and address 3
usb 2-1: reset full speed USB device using uhci_hcd and address 3
usb 2-1: reset full speed USB device using uhci_hcd and address 3
usb 2-1: reset full speed USB device using uhci_hcd and address 3
sd 0:0:0:0: SCSI error: return code = 0x50000
end_request: I/O error, dev sda, sector 1064
Buffer I/O error on device sda, logical block 133
lost page write due to I/O error on sda

and from dd:

bash-3.00# dd if=/dev/zero of=/dev/sda
dd: writing to `/dev/sda': Input/output error
13489+0 records in
13488+0 records out
6905856 bytes (6.9 MB) copied, 206.473 seconds, 33.4 kB/s
dd: closing input file `/dev/zero': Bad file descriptor

It never stops on the same place, but is always before reaching the
7 MB.  I thought that I could ajust some tuneable parameters here:

/sys/block/sda/device

But I'm completly lost on the problem.  If anyone could be of assistance,
it would appreciated.

Sincere regards
Marco

^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: Odd USB problem on THOMSON PDP95FM
  2007-01-19 18:55 Odd USB problem on THOMSON PDP95FM Marco Ferra
@ 2007-01-19 19:59 ` Greg KH
  0 siblings, 0 replies; 2+ messages in thread
From: Greg KH @ 2007-01-19 19:59 UTC (permalink / raw)
  To: Marco Ferra; +Cc: linux-kernel

On Fri, Jan 19, 2007 at 06:55:10PM +0000, Marco Ferra wrote:
> Hi kernel developers
> 
> I don't know if this is the proper list but I have a very odd problem
> and it's driving me nuts for the past two days.

I suggest posting this to the linux-usb-devel mailing list, and
including your kernel version, and enable CONFIG_USB_STORAGE_DEBUG to
see the debugging error messages from the usb-storage driver to help us
out.

thanks,

greg k-h

^ permalink raw reply	[flat|nested] 2+ messages in thread

end of thread, other threads:[~2007-01-19 20:00 UTC | newest]

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2007-01-19 18:55 Odd USB problem on THOMSON PDP95FM Marco Ferra
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