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Date:      Thu, 10 Dec 2009 10:08:00 +0100
From:      Spil Oss <spil.oss@googlemail.com>
To:        freebsd-usb@freebsd.org
Subject:   Problem with 2.5" USB drive
Message-ID:  <5fbf03c20912100108p72de71a8t95937304510c9a9a@mail.gmail.com>

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Hello all,

Can't get my 2.5" USB drive to work reliably. The device has a ALI
M5642 Chip and connects 2.5" PATA disks. Vendor 0x0402 is
USB_VENDOR_ACERLABS /* Acer Labs */ which ALi is afaik.

When I connect it:
Dec  8 16:11:20 gw root: Unknown USB device: vendor 0x0402 product
0x5642 bus uhub3
Dec  8 16:11:20 gw kernel: ugen3.2: <vendor 0x0402> at usbus3
Dec  8 16:11:20 gw kernel: umass0: <vendor 0x0402 USB 2.0 Storage
Device, class 0/0, rev 2.00/1.00, addr 2> on usbus3
Dec  8 16:11:20 gw kernel: umass0:  SCSI over Bulk-Only; quirks = 0x0000
Dec  8 16:11:21 gw kernel: umass0:0:0:-1: Attached to scbus0
Dec  8 16:11:21 gw kernel: da0 at umass-sim0 bus 0 target 0 lun 0
Dec  8 16:11:21 gw kernel: da0: <USB 2.0 Storage Device 0100> Fixed
Direct Access SCSI-0 device
Dec  8 16:11:21 gw kernel: da0: 40.000MB/s transfers
Dec  8 16:11:21 gw kernel: da0: 38154MB (78140160 512 byte sectors:
255H 63S/T 4864C)

When I try to dd/fdisk/bsdlabel the disk I tend to get
Dec  9 12:47:49 gw kernel: (da0:umass-sim0:0:0:0): AutoSense Failed
Sometimes the LED on the cage stays red until I reconnect it.
When I first `usbconfig -u 3 -a 2 reset` and then reconnect the disk
it is recognized again. Tried both on an Intel GM855 and a nVidia
nForce4 system.

Errors that pop up when transferring data:
Dec  8 16:11:21 gw kernel: (da0:umass-sim0:0:0:0): SYNCHRONIZE
CACHE(10). CDB: 35 0 0 0 0 0 0 0 0 0
Dec  8 16:11:21 gw kernel: (da0:umass-sim0:0:0:0): UNIT ATTENTION asc:28,0
Dec  8 16:11:21 gw kernel: (da0:umass-sim0:0:0:0): Not ready to ready
change, medium may have changed

Strangely it seems that this device was recognized on a previous
version of FreeBSD see http://takaq1.plala.jp/freebsd/usb/index.html
(not that I've tried!) Not quite clear what version of FreeBSD that
is.

Ultimately FreeBSD crashes when I play around too long..

Can anyone assist?



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