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#dmesg ?? 如下:

usb 2-2: new high speed USB device using ehci_hcd and address 4

ehci_hcd 0000:00:1d.7: port 2 reset error -110

hub 2-0:1.0: hub_port_status failed (err = -32)

hub 2-0:1.0: unable to enumerate USB device on port 2

usb 6-2: new full speed USB device using uhci_hcd and address 2

usb 6-2: New USB device found, idVendor=1234, idProduct=5678

usb 6-2: New USB device strings: Mfr=16, Product=32, SerialNumber=96

usb 6-2: Product: FUSB200

usb 6-2: Manufacturer: GENERIC INC.

usb 6-2: SerialNumber: 01234567890C

usb 6-2: configuration #1 chosen from 1 choice

Initializing USB Mass Storage driver...

scsi4 : SCSI emulation for USB Mass Storage devices

usbcore: registered new interface driver usb-storage

USB Mass Storage support registered.

usb-storage: device found at 2

usb-storage: waiting for device to settle before scanning

usbcore: registered new interface driver usbtouchscreen

usb-storage: device scan complete

scsi 4:0:0:0: Direct-Access ??? Generic?? Audio Product?? v2.0 PQ: 0 ANSI: 2

sd 4:0:0:0: Attached scsi generic sg2 type 0

sd 4:0:0:0: [sdb] 8388352 512-byte logical blocks: (4.29 GB/3.99 GiB)

sd 4:0:0:0: [sdb] Write Protect is off

sd 4:0:0:0: [sdb] Mode Sense: 20 00 00 00

sd 4:0:0:0: [sdb] Assuming drive cache: write through

sd 4:0:0:0: [sdb] Assuming drive cache: write through

sdb:

sd 4:0:0:0: [sdb] Assuming drive cache: write through

sd 4:0:0:0: [sdb] Attached SCSI removable disk

usb 6-2: reset full speed USB device using uhci_hcd and address 2

usb 6-2: device descriptor read/64, error -110

不知是何原因，還請幫忙解決。

系統：fedora 12 x86_64 ?? usb設備：4G.

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