Ubuntu Edgy kernel 2.6.17-11-generic I'm pretty much having the same problem. At first I thought modprobe -r ehci_hcd solved the issue (of course with lower speed). But after plugging my Seagate FreeAgent 320GB in and trying to transfer a dvd-image I get the following error. Does anyone have an idea on when this issue will be solved? dmesg output: [17179878.068000] usb 3-1: new full speed USB device using uhci_hcd and address 2 [17179878.236000] usb 3-1: configuration #1 chosen from 1 choice [17179878.344000] usbcore: registered new driver libusual [17179878.360000] Initializing USB Mass Storage driver... [17179878.360000] scsi2 : SCSI emulation for USB Mass Storage devices [17179878.360000] usbcore: registered new driver usb-storage [17179878.360000] USB Mass Storage support registered. [17179878.360000] usb-storage: device found at 2 [17179878.360000] usb-storage: waiting for device to settle before scanning [17179883.360000] usb-storage: device scan complete [17179883.364000] Vendor: Seagate Model: FreeAgentDesktop Rev: 100D [17179883.364000] Type: Direct-Access ANSI SCSI revision: 04 [17179883.380000] sdb: Spinning up disk....ready [17179890.596000] SCSI device sdb: 625142448 512-byte hdwr sectors (320073 MB) [17179890.600000] sdb: Write Protect is off [17179890.600000] sdb: Mode Sense: 1c 00 00 00 [17179890.600000] sdb: assuming drive cache: write through [17179890.604000] SCSI device sdb: 625142448 512-byte hdwr sectors (320073 MB) [17179890.608000] sdb: Write Protect is off [17179890.608000] sdb: Mode Sense: 1c 00 00 00 [17179890.608000] sdb: assuming drive cache: write through [17179890.608000] sdb: sdb1 [17179890.636000] sd 2:0:0:0: Attached scsi disk sdb [17179890.636000] sd 2:0:0:0: Attached scsi generic sg2 type 0 [17179914.760000] kjournald starting. Commit interval 5 seconds [17179914.768000] EXT3 FS on sdb1, internal journal [17179914.768000] EXT3-fs: mounted filesystem with ordered data mode. [17182358.672000] sd 2:0:0:0: Device not ready: <6>: Current: sense key: Not Ready [17182358.672000] Additional sense: Logical unit not ready, initializing cmd. required [17182358.672000] end_request: I/O error, dev sdb, sector 12479 [17182358.672000] EXT3-fs error (device sdb1): ext3_find_entry: reading directory #2 offset 0 [17182358.672000] Aborting journal on device sdb1. [17182358.688000] sd 2:0:0:0: Device not ready: <6>: Current: sense key: Not Ready [17182358.688000] Additional sense: Logical unit not ready, initializing cmd. required [17182358.688000] end_request: I/O error, dev sdb, sector 12527 [17182358.688000] Buffer I/O error on device sdb1, logical block 1558 [17182358.688000] lost page write due to I/O error on sdb1 [17182358.696000] sd 2:0:0:0: Device not ready: <6>: Current: sense key: Not Ready [17182358.696000] Additional sense: Logical unit not ready, initializing cmd. required [17182358.696000] end_request: I/O error, dev sdb, sector 63 [17182358.696000] Buffer I/O error on device sdb1, logical block 0 [17182358.696000] lost page write due to I/O error on sdb1 [17182556.500000] SCSI device sdb: 625142448 512-byte hdwr sectors (320073 MB) [17182556.504000] sdb: Write Protect is off [17182556.504000] sdb: Mode Sense: 1c 00 00 00 [17182556.504000] sdb: assuming drive cache: write through [17182556.504000] sdb: sdb1 [17182568.148000] usb 3-1: USB disconnect, address 2 [17182580.668000] usb 2-1: new full speed USB device using uhci_hcd and address 2 [17182580.840000] usb 2-1: configuration #1 chosen from 1 choice [17182580.912000] scsi3 : SCSI emulation for USB Mass Storage devices [17182580.912000] usb-storage: device found at 2 [17182580.912000] usb-storage: waiting for device to settle before scanning [17182585.912000] usb-storage: device scan complete [17182585.916000] Vendor: Seagate Model: FreeAgentDesktop Rev: 100D [17182585.916000] Type: Direct-Access ANSI SCSI revision: 04 [17182585.932000] sdb: Spinning up disk....ready [17182593.104000] SCSI device sdb: 625142448 512-byte hdwr sectors (320073 MB) [17182593.108000] sdb: Write Protect is off [17182593.108000] sdb: Mode Sense: 1c 00 00 00 [17182593.108000] sdb: assuming drive cache: write through [17182593.112000] SCSI device sdb: 625142448 512-byte hdwr sectors (320073 MB) [17182593.116000] sdb: Write Protect is off [17182593.116000] sdb: Mode Sense: 1c 00 00 00 [17182593.116000] sdb: assuming drive cache: write through [17182593.116000] sdb: sdb1 [17182593.140000] sd 3:0:0:0: Attached scsi disk sdb [17182593.140000] sd 3:0:0:0: Attached scsi generic sg2 type 0 [17182615.024000] kjournald starting. Commit interval 5 seconds [17182615.024000] EXT3-fs warning (device sdb1): ext3_clear_journal_err: Filesystem error recorded from previous mount: IO failure [17182615.024000] EXT3-fs warning (device sdb1): ext3_clear_journal_err: Marking fs in need of filesystem check. [17182615.044000] EXT3-fs warning: mounting fs with errors, running e2fsck is recommended [17182615.052000] EXT3 FS on sdb1, internal journal [17182615.052000] EXT3-fs: mounted filesystem with ordered data mode.