From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964845AbXASSzP (ORCPT ); Fri, 19 Jan 2007 13:55:15 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932842AbXASSzP (ORCPT ); Fri, 19 Jan 2007 13:55:15 -0500 Received: from wr-out-0506.google.com ([64.233.184.235]:26693 "EHLO wr-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932841AbXASSzN (ORCPT ); Fri, 19 Jan 2007 13:55:13 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=NBmTKd4stY/j/2f9Sx7fnsxqJgTGt/QCkeb+3GJrsLYLh7O6geyNhPz1TI9i1UL+rqfWN0azPuN7K1DTAeGner2B4xLyG03Z6pTsiZ6ImCecYxlNIdqF9CyI+cI5iWACsNDlWgwghJ9udSf4Qx6WfGuFXTKfSQWvd/q0YFKP4Ck= Message-ID: Date: Fri, 19 Jan 2007 18:55:10 +0000 From: "Marco Ferra" To: linux-kernel@vger.kernel.org Subject: Odd USB problem on THOMSON PDP95FM MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org 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