On Tue, 12 Dec 2006, Vaclav Barta wrote:
> Hi,
>
> I have a USB 2.0 flash drive called "next alien" ("developed by Emgeton,
> assembled in Taiwan, copyright Bell technology" - not very high-end, but it
> looks funny :-) ) and identifying itself as "Nu Drive" (see the log below)
> which I'd like to get working with Linux. Right now, I'm running Gentoo
> kernel 2.6.18-r4 (with USB debugging turned on), and when I insert it into
> the USB port, its LED starts blinking and /var/log/messages gets
>
> Dec 12 19:04:42 quanxi kernel: usb 1-3: new high speed USB device using
> ehci_hcd and address 3
> Dec 12 19:04:42 quanxi kernel: usb 1-3: Product: Nu Drive
> Dec 12 19:04:42 quanxi kernel: usb 1-3: Manufacturer:
> Dec 12 19:04:42 quanxi kernel: usb 1-3: SerialNumber: 075A141402A5
> Dec 12 19:04:42 quanxi kernel: usb 1-3: configuration #1 chosen from 1 choice
> Dec 12 19:04:42 quanxi kernel: scsi1 : SCSI emulation for USB Mass Storage
> devices
> Dec 12 19:04:47 quanxi kernel: Vendor: Model: Nu Drive
> Rev: PMAP
> Dec 12 19:04:47 quanxi kernel: Type: Direct-Access
> ANSI SCSI revision: 00
> Dec 12 19:04:47 quanxi kernel: SCSI device sda: 982016 512-byte hdwr sectors
> (503 MB)
> Dec 12 19:04:47 quanxi kernel: sda: Write Protect is off
> Dec 12 19:04:47 quanxi kernel: SCSI device sda: 982016 512-byte hdwr sectors
> (503 MB)
> Dec 12 19:04:47 quanxi kernel: sda: Write Protect is off
> Dec 12 19:04:47 quanxi kernel: sda:<6>sd 1:0:0:0: SCSI error: return code =
> 0x08000002
> Dec 12 19:04:47 quanxi kernel: sda: Current: sense key=0x3
> Dec 12 19:04:47 quanxi kernel: ASC=0x11 ASCQ=0x0
The literal meaning of this error information is "Medium error:
unrecovered read error". While it seems unlikely that a flash device
would have a serious read error, nevertheless it does seem to indicate
that the device might not be working correctly. Although you say it does
work under Windows...
You can try using the usbmon facility (see the kernel source file
Documentation/usb/usbmon.txt) to find out what's really going on.
Alan Stern
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