I/O error copying large files to an USB flash memory

[ekerazha]

Ubuntu 6.10 "Edgy Eft"

Trying to copy a large file (the Service Pack 2 of Windows XP) to my USB flash memory, it begins the copy but some seconds later it stops with this error (from console):

"cp: scrittura di `/media/usbdisk/WindowsXP-KB835935-SP2-ITA.exe': Errore di I/O"

(translated from Italian: ""cp: writing of `/media/usbdisk/WindowsXP-KB835935-SP2-ITA.exe': I/O error"

... and pops up a message saying the disk wasn't correctly disconnected (so it seems like the system loses the connection with the drive).

Filesystem is FAT32.

On Windows XP the flash drive works fine.

[trollord (trollenlord)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. You reported this bug a while ago and there hasn't been any activity in it recently. We were wondering is this still an issue for you? Thanks in advance.

The issue that you reported is one that should be reproductable with the live environment of the Desktop CD of the development release - Gutsy Gibbon. It would help us greatly if you could test with it so we can work on getting it fixed in the actively developed release. You can find out more about the development release at [WWW] http://www.ubuntu.com/testing/

[trollord (trollenlord)]

We are closing this bug report because it lacks the information we need to investigate the problem, as described in the previous comments. Please reopen it if you can give us the missing information, and don't hesitate to submit bug reports in the future. To reopen the bug report you can click on the current status, under the Status column, and change the Status back to "New". Thanks again!

[lcardoso (luciano-murta)]

I have the same problem? when I copy a large file (>20MB) to a usb flash drive the drive disconnects itself.
The messages in /var/log/messages are
-----------------------------------------------------------
Sep 16 22:03:36 ubuntu kernel: [ 668.558484] usb 3-1: reset high speed USB device using ehci_hcd and address 3
Sep 16 22:03:46 ubuntu kernel: [ 678.955558] usb 3-1: USB disconnect, address 3
Sep 16 22:03:46 ubuntu kernel: [ 678.955806] sd 0:0:0:0: scsi: Device offlined - not ready after error recovery
Sep 16 22:03:46 ubuntu kernel: [ 678.957017] sd 0:0:0:0: [sda] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK,SUGGEST_OK
Sep 16 22:03:46 ubuntu kernel: [ 678.957023] end_request: I/O error, dev sda, sector 2074935
Sep 16 22:03:46 ubuntu kernel: [ 678.957031] lost page write due to I/O error on sda2
----------------------------------------------------------------------------------------------------------------------------
My last test was on Gutsy live:
Linux ubuntu 2.6.22-10-generic #1 SMP Wed Aug 22 08:11:52 GMT 2007 i686 GNU/Linux

root@ubuntu:~# lspci
00:00.0 Host bridge: nVidia Corporation nForce3 250Gb Host Bridge (rev a1)
00:01.0 ISA bridge: nVidia Corporation nForce3 250Gb LPC Bridge (rev a2)
00:01.1 SMBus: nVidia Corporation nForce 250Gb PCI System Management (rev a1)
00:02.0 USB Controller: nVidia Corporation CK8S USB Controller (rev a1)
00:02.1 USB Controller: nVidia Corporation CK8S USB Controller (rev a1)
00:02.2 USB Controller: nVidia Corporation nForce3 EHCI USB 2.0 Controller (rev a2)
00:05.0 Bridge: nVidia Corporation CK8S Ethernet Controller (rev a2)
00:06.0 Multimedia audio controller: nVidia Corporation nForce3 250Gb AC'97 Audio Controller (rev a1)
00:08.0 IDE interface: nVidia Corporation CK8S Parallel ATA Controller (v2.5) (rev a2)
00:0b.0 PCI bridge: nVidia Corporation nForce3 250Gb AGP Host to PCI Bridge (rev a2)
00:0e.0 PCI bridge: nVidia Corporation nForce3 250Gb PCI-to-PCI Bridge (rev a2)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
01:00.0 VGA compatible controller: nVidia Corporation NV11 [GeForce2 MX/MX 400] (rev b2)

---
I also tested on 6.04, 6.10, 7.04./
Tested with drives from Kingston, Corsair and SanDisk/

[ekerazha (ekerazha)]

Well, I use Arch Linux now... however, I workarounded this bug using the external power supplier for the USB hub (instead of taking the power from the USB port only). *But* note that on Microsoft Windows it worked fine also without the external power supplier.

[Andres Mujica (andres.mujica)]

Thank you for taking the time to report this bug and helping to make Ubuntu better.

Please help us with this information, maybe with that we can bring you back to ubuntu ;)

Please include the information requested at [WWW] https://help.ubuntu.com/community/DebuggingUSBStorage as separate attachments.

[Erki Manniste (erki)]

Nov 4 17:23:45 erki-laptop kernel: [315492.984000] usb 4-1: new high speed USB device using ehci_hcd and address 19
Nov 4 17:23:45 erki-laptop kernel: [315493.120000] usb 4-1: configuration #1 chosen from 1 choice
Nov 4 17:23:45 erki-laptop kernel: [315493.120000] scsi10 : SCSI emulation for USB Mass Storage devices
Nov 4 17:23:50 erki-laptop kernel: [315498.120000] scsi 10:0:0:0: Direct-Access RockChip USB MP3 1.00 PQ: 0 ANSI: 0
Nov 4 17:23:50 erki-laptop kernel: [315498.120000] scsi 10:0:0:1: Direct-Access RockChip USB SD 1.00 PQ: 0 ANSI: 0 CCS
Nov 4 17:23:50 erki-laptop kernel: [315498.120000] sd 10:0:0:0: [sdd] 4086272 512-byte hardware sectors (2092 MB)
Nov 4 17:23:50 erki-laptop kernel: [315498.124000] sd 10:0:0:0: [sdd] Write Protect is off
Nov 4 17:23:50 erki-laptop kernel: [315498.124000] sd 10:0:0:0: [sdd] 4086272 512-byte hardware sectors (2092 MB)
Nov 4 17:23:50 erki-laptop kernel: [315498.124000] sd 10:0:0:0: [sdd] Write Protect is off
Nov 4 17:23:50 erki-laptop kernel: [315498.128000] sdd: unknown partition table
Nov 4 17:23:50 erki-laptop kernel: [315498.132000] sd 10:0:0:0: [sdd] Attached SCSI removable disk
Nov 4 17:23:50 erki-laptop kernel: [315498.132000] sd 10:0:0:0: Attached scsi generic sg3 type 0
Nov 4 17:23:50 erki-laptop kernel: [315498.132000] sd 10:0:0:1: [sde] Attached SCSI removable disk
Nov 4 17:23:50 erki-laptop kernel: [315498.132000] sd 10:0:0:1: Attached scsi generic sg4 type 0
Nov 4 17:26:33 erki-laptop kernel: [315660.196000] usb 4-1: reset high speed USB device using ehci_hcd and address 19
Nov 4 17:26:33 erki-laptop kernel: [315660.640000] usb 4-1: reset high speed USB device using ehci_hcd and address 19
Nov 4 17:26:34 erki-laptop kernel: [315661.252000] sd 10:0:0:0: [sdd] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
Nov 4 17:26:34 erki-laptop kernel: [315661.252000] end_request: I/O error, dev sdd, sector 2311984
Nov 4 17:26:34 erki-laptop kernel: [315661.256000] sd 10:0:0:0: [sdd] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
Nov 4 17:26:34 erki-laptop kernel: [315661.256000] end_request: I/O error, dev sdd, sector 2312224
Nov 4 17:26:34 erki-laptop kernel: [315661.256000] sd 10:0:0:0: [sdd] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
Nov 4 17:26:34 erki-laptop kernel: [315661.256000] end_request: I/O error, dev sdd, sector 2312464
Nov 4 17:26:34 erki-laptop kernel: [315661.256000] sd 10:0:0:0: [sdd] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
Nov 4 17:26:34 erki-laptop kernel: [315661.256000] end_request: I/O error, dev sdd, sector 2312704
Nov 4 17:26:34 erki-laptop kernel: [315661.260000] sd 10:0:0:0: [sdd] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
Nov 4 17:26:34 erki-laptop kernel: [315661.260000] end_request: I/O error, dev sdd, sector 2312944
Nov 4 17:26:34 erki-laptop kernel: [315661.260000] sd 10:0:0:0: [sdd] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
Nov 4 17:26:34 erki-laptop kernel: [315661.260000] end_request: I/O error, dev sdd, sector 2313016
Nov 4 17:26:34 erki-laptop kernel: [315661.260000] sd 10:0:0:0: [sdd] Result: hostbyte=DID_ERROR driverb...

[Erki Manniste (erki)]

Nov 4 17:23:50 erki-laptop kernel: [315498.128000] sdd: unknown partition table

partition is fat32

[Erki Manniste (erki)]

when i kill x and copy through command line. its something like this:

Nov 4 23:30:01 erki-laptop kernel: [337468.700000] sd 15:0:0:0: [sdd] 4086272 512-byte hardware sectors (2092 MB)
Nov 4 23:30:01 erki-laptop kernel: [337468.700000] sd 15:0:0:0: [sdd] Write Protect is off
Nov 4 23:30:01 erki-laptop kernel: [337468.704000] sd 15:0:0:0: [sdd] 4086272 512-byte hardware sectors (2092 MB)
Nov 4 23:30:01 erki-laptop kernel: [337468.708000] sd 15:0:0:0: [sdd] Write Protect is off
Nov 4 23:30:01 erki-laptop kernel: [337468.708000] sdd: unknown partition table
Nov 4 23:30:01 erki-laptop kernel: [337468.712000] sd 15:0:0:0: [sdd] Attached SCSI removable disk
Nov 4 23:30:01 erki-laptop kernel: [337468.712000] sd 15:0:0:0: Attached scsi generic sg3 type 0
Nov 4 23:30:01 erki-laptop kernel: [337468.712000] sd 15:0:0:1: [sde] Attached SCSI removable disk
Nov 4 23:30:01 erki-laptop kernel: [337468.712000] sd 15:0:0:1: Attached scsi generic sg4 type 0
Nov 4 23:30:19 erki-laptop kernel: [337486.524000] usb 4-1: reset high speed USB device using ehci_hcd and address 24
Nov 4 23:30:19 erki-laptop kernel: [337486.968000] usb 4-1: reset high speed USB device using ehci_hcd and address 24
Nov 4 23:30:20 erki-laptop kernel: [337487.584000] sd 15:0:0:0: [sdd] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
Nov 4 23:30:20 erki-laptop kernel: [337487.584000] end_request: I/O error, dev sdd, sector 2311984
Nov 4 23:30:20 erki-laptop kernel: [337487.588000] VFS: busy inodes on changed media.
Nov 4 23:30:20 erki-laptop kernel: [337487.596000] sd 15:0:0:0: [sdd] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
Nov 4 23:30:20 erki-laptop kernel: [337487.596000] end_request: I/O error, dev sdd, sector 2312224
Nov 4 23:30:20 erki-laptop kernel: [337487.596000] sd 15:0:0:1: [sde] READ CAPACITY failed
Nov 4 23:30:20 erki-laptop kernel: [337487.596000] sd 15:0:0:1: [sde] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
Nov 4 23:30:20 erki-laptop kernel: [337487.596000] sd 15:0:0:1: [sde] Sense not available.
Nov 4 23:30:20 erki-laptop kernel: [337487.596000] sd 15:0:0:1: [sde] Write Protect is off
Nov 4 23:30:20 erki-laptop kernel: [337487.596000] sd 15:0:0:0: [sdd] READ CAPACITY failed
Nov 4 23:30:20 erki-laptop kernel: [337487.596000] sd 15:0:0:0: [sdd] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
Nov 4 23:30:20 erki-laptop kernel: [337487.596000] sd 15:0:0:0: [sdd] Sense not available.
Nov 4 23:30:20 erki-laptop kernel: [337487.600000] sd 15:0:0:0: [sdd] Write Protect is off
Nov 4 23:30:20 erki-laptop kernel: [337487.636000] usb 4-1: USB disconnect, address 24
Nov 4 23:30:20 erki-laptop kernel: [337487.636000] printk: 156 messages suppressed.
Nov 4 23:30:20 erki-laptop kernel: [337487.636000] lost page write due to I/O error on sdd
Nov 4 23:30:20 erki-laptop last message repeated 7 times
Nov 4 23:30:20 erki-laptop kernel: [337487.648000] sd 15:0:0:1: [sde] READ CAPACITY failed
Nov 4 23:30:20 erki-laptop kernel: [337487.648000] sd 15:0:0:1: [sde] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK,SUGGEST_OK
Nov 4 23:30:20 erki-laptop kernel: [337487.648000] sd 15:0:0:1: [sde] Sense not available...

[Erki Manniste (erki)]

erki@erki-laptop:~$ lspci
00:00.0 Host bridge: Intel Corporation Mobile 915GM/PM/GMS/910GML Express Processor to DRAM Controller (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 2 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB2 EHCI Controller (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev d3)
00:1e.2 Multimedia audio controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Audio Controller (rev 03)
00:1f.0 ISA bridge: Intel Corporation 82801FBM (ICH6M) LPC Interface Bridge (rev 03)
00:1f.1 IDE interface: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) IDE Controller (rev 03)
02:04.0 Network controller: Intel Corporation PRO/Wireless 2915ABG Network Connection (rev 05)
02:06.0 CardBus bridge: Texas Instruments PCIxx21/x515 Cardbus Controller
02:06.3 Mass storage controller: Texas Instruments PCIxx21 Integrated FlashMedia Controller
02:06.4 Generic system peripheral [0805]: Texas Instruments PCI6411/6421/6611/6621/7411/7421/7611/7621 Secure Digital Controller
02:06.5 Communication controller: Texas Instruments PCI6411/6421/6611/6621/7411/7421/7611/7621 Smart Card Controller
10:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5751M Gigabit Ethernet PCI Express (rev 11)
erki@erki-laptop:~$

[Andres Mujica (andres.mujica)]

Erki could you post your uname -r ?

thanks

[Andres Mujica (andres.mujica)]

lcardoso is it possible to you to test with latest gutsy, more specifically with latest kernel?

2.6.22-14-generic

thanks

[Erki Manniste (erki)]

2.6.22-14-xen

but its not the only kernel i use. im just trying the virtuálization.

other kernels i use:
2.6.22-14-generic
2.6.20-15-generic

[lcardoso (luciano-murta)]

Error "I/O error" while copying "/home/luci...2007S.mp4". (60Mbytes)
Nov 18 15:06:29 ubuntu710 kernel: [21956.890121] usb 3-4: new high speed USB device using ehci_hcd and address 7
uname -a
Linux ubuntu710 2.6.22-14-generic #1 SMP Sun Oct 14 23:05:12 GMT 2007 i686 GNU/Linux

[lcardoso (luciano-murta)]

I have tested this bug with pendrives from Kingston and Sandisk and PNY and Corsair.
Now I bought one from Kingmax. This type of pendrive does not have an external metallic tip cover, like Sony microvault.
(http://www.kingmaxdigi.com/product/superstick.htm, http://www.sony.net/Products/Media/Microvault/usm-h.html)
The problem DOES NOT occur with this kind of pendrive.
So, I believe, it's a hardware problem afterall, but I don't understand why and how...

[Andres Mujica (andres.mujica)]

It's confirmed with this kernel

[Leann Ogasawara (leannogasawara)]

The 18 month support period for Edgy Eft 6.10 has reached it's end of life. As a result, we are closing the linux-source-2.6.17 Edgy Eft kernel task. However, Hardy Heron 8.04 was recently released. It would be helpful if you could test the new release and verify if this is still an issue - http://www.ubuntu.com/getubuntu/download . If the issue still exists, please update this report by changing the Status of the "linux" task from "Incomplete" to "New". Thanks.

[Leann Ogasawara (leannogasawara)]

Also closing against 2.6.15, 2.6.20, and 2.6.22 as this does not qualify for a Stable Release Update - https://wiki.ubuntu.com/StableReleaseUpdates . But agains, this will remain open against the actively developed kernel. Please provide testing feedback if possible. Thanks.

[John (reinisjohn)]

Ubuntu 64 bit 8.04 error copying on 16gb usb flash as FAT32 as ext3 also.

[John (reinisjohn)]

 lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 8.04
Release: 8.04
Codename: hardy

uname -a
Linux main-desktop 2.6.24-16-generic #1 SMP Thu Apr 10 12:47:45 UTC 2008 x86_64 GNU/Linux

Bus 006 Device 001: ID 0000:0000
Device Descriptor:
  bLength 18
  bDescriptorType 1
  bcdUSB 1.10
  bDeviceClass 9 Hub
  bDeviceSubClass 0 Unused
  bDeviceProtocol 0 Full speed (or root) hub
  bMaxPacketSize0 64
  idVendor 0x0000
  idProduct 0x0000
  bcdDevice 2.06
  iManufacturer 3 Linux 2.6.24-16-generic uhci_hcd
  iProduct 2 UHCI Host Controller
  iSerial 1 0000:00:1d.2
  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 (or root) 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 0x0002 1x 2 bytes
        bInterval 255
Hub Descriptor:
  bLength 9
  bDescriptorType 41
  nNbrPorts 2
  wHubCharacteristic 0x000a
    No power switching (usb 1.0)
    Per-port overcurrent protection
  bPwrOn2PwrGood 1 * 2 milli seconds
  bHubContrCurrent 0 milli Ampere
  DeviceRemovable 0x00
  PortPwrCtrlMask 0xff
 Hub Port Status:
   Port 1: 0000.0100 power
   Port 2: 0000.0100 power
Device Status: 0x0003
  Self Powered
  Remote Wakeup Enabled

Bus 005 Device 001: ID 0000:0000
Device Descriptor:
  bLength 18
  bDescriptorType 1
  bcdUSB 1.10
  bDeviceClass 9 Hub
  bDeviceSubClass 0 Unused
  bDeviceProtocol 0 Full speed (or root) hub
  bMaxPacketSize0 64
  idVendor 0x0000
  idProduct 0x0000
  bcdDevice 2.06
  iManufacturer 3 Linux 2.6.24-16-generic uhci_hcd
  iProduct 2 UHCI Host Controller
  iSerial 1 0000:00:1d.1
  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
  ...

[Leann Ogasawara (leannogasawara)]

The Ubuntu Kernel Team is planning to move to the 2.6.27 kernel for the upcoming Intrepid Ibex 8.10 release. As a result, the kernel team would appreciate it if you could please test this newer 2.6.27 Ubuntu kernel. There are one of two ways you should be able to test:

1) If you are comfortable installing packages on your own, the linux-image-2.6.27-* package is currently available for you to install and test.

--or--

2) The upcoming Alpha5 for Intrepid Ibex 8.10 will contain this newer 2.6.27 Ubuntu kernel. Alpha5 is set to be released Thursday Sept 4. Please watch http://www.ubuntu.com/testing for Alpha5 to be announced. You should then be able to test via a LiveCD.

Please let us know immediately if this newer 2.6.27 kernel resolves the bug reported here or if the issue remains. More importantly, please open a new bug report for each new bug/regression introduced by the 2.6.27 kernel and tag the bug report with 'linux-2.6.27'. Also, please specifically note if the issue does or does not appear in the 2.6.26 kernel. Thanks again, we really appreicate your help and feedback.

[Ralph Janke (txwikinger)]

Unfortunately this bug report is being closed because we received no response to the last inquiry for information. However, the Intrepid Ibex 8.10 Beta release was most recently announced - http://www.ubuntu.com/testing/intrepid/beta . If you are able to confirm this is still an issue with this most recent release please feel free to reopen this report. To reopen the bug report you can click on the current status, under the Status column, and change the Status back to "New". Thanks.

[Victor Cherkassky (vcherkassky)]

I confirm this bug on Intepid Ibex 8.10.
Tried kernels 2.6.27-7 and 2.6.24-19.
Works only when enabling USB 1.1.
Works with transcend tsonic630 2Gb, but doesn't with kingston data traveler 8Gb.
Flash drive was formatted under WinXP and works fine under Win.

    lsusb:
Bus 006 Device 010: ID 0951:1607 Kingston Technology Data Traveler 2.0 <- non-working kingston
Bus 006 Device 002: ID 0402:5661 ALi Corp. <- working transcend

   tail -f /var/log/messages:
Nov 17 14:12:55 victor-book kernel: [ 3656.337328] usb 6-1: new high speed USB device using ehci_hcd and address 10
Nov 17 14:12:56 victor-book kernel: [ 3656.547864] usb 6-1: configuration #1 chosen from 1 choice
Nov 17 14:12:56 victor-book kernel: [ 3656.549088] scsi8 : SCSI emulation for USB Mass Storage devices
Nov 17 14:13:01 victor-book kernel: [ 3661.554374] scsi 8:0:0:0: Direct-Access Kingston DataTraveler 2.0 1.00 PQ: 0 ANSI: 2
Nov 17 14:13:01 victor-book kernel: [ 3661.566756] sd 8:0:0:0: [sdc] 15769600 512-byte hardware sectors (8074 MB)
Nov 17 14:13:01 victor-book kernel: [ 3661.567338] sd 8:0:0:0: [sdc] Write Protect is off
Nov 17 14:13:01 victor-book kernel: [ 3661.571472] sd 8:0:0:0: [sdc] 15769600 512-byte hardware sectors (8074 MB)
Nov 17 14:13:01 victor-book kernel: [ 3661.572458] sd 8:0:0:0: [sdc] Write Protect is off
Nov 17 14:13:01 victor-book kernel: [ 3661.572477] sdc: unknown partition table
Nov 17 14:13:01 victor-book kernel: [ 3661.697746] sd 8:0:0:0: [sdc] Attached SCSI removable disk
Nov 17 14:13:01 victor-book kernel: [ 3661.697804] sd 8:0:0:0: Attached scsi generic sg2 type 0
Nov 17 14:14:45 victor-book kernel: [ 3765.785914] usb 6-1: reset high speed USB device using ehci_hcd and address 10
Nov 17 14:14:56 victor-book kernel: [ 3776.805851] usb 6-1: reset high speed USB device using ehci_hcd and address 10
Nov 17 14:15:02 victor-book kernel: [ 3783.057420] usb 6-1: reset high speed USB device using ehci_hcd and address 10
Nov 17 14:15:03 victor-book kernel: [ 3783.621028] usb 6-1: reset high speed USB device using ehci_hcd and address 10
Nov 17 14:15:03 victor-book kernel: [ 3784.174581] usb 6-1: reset high speed USB device using ehci_hcd and address 10
Nov 17 14:15:04 victor-book kernel: [ 3784.607723] usb 6-1: USB disconnect, address 10
Nov 17 14:15:04 victor-book kernel: [ 3784.607936] sd 8:0:0:0: [sdc] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
Nov 17 14:15:04 victor-book kernel: [ 3784.607945] end_request: I/O error, dev sdc, sector 952400
Nov 17 14:15:04 victor-book kernel: [ 3784.611341] printk: 848 messages suppressed.
Nov 17 14:15:04 victor-book kernel: [ 3784.611350] lost page write due to I/O error on sdc
Nov 17 14:15:04 victor-book kernel: [ 3784.611359] lost page write due to I/O error on sdc
Nov 17 14:15:04 victor-book kernel: [ 3784.611368] lost page write due to I/O error on sdc
Nov 17 14:15:04 victor-book kernel: [ 3784.611376] lost page write due to I/O error on sdc
Nov 17 14:15:04 victor-book kernel: [ 3784.611384] lost page write due to I/O error on sdc
Nov 17 14:15:04 victor-book kernel: [ 3784.611392] lost page write due to I/O error on sdc
Nov 17 14:15:04 victor-boo...

[Launchpad Janitor (janitor)]

Per a decision made by the Ubuntu Kernel Team, bugs will longer be assigned to the ubuntu-kernel-team in Launchpad as part of the bug triage process. The ubuntu-kernel-team is being unassigned from this bug report. Refer to https://wiki.ubuntu.com/KernelTeamBugPolicies for more information. Thanks.