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From: Andrew Beam <andrew.beam@gmail.com>
Date: Fri, 31 Aug 2012 19:11:13 +0200
Message-ID: <CAB95E9Aof7NDZBLzJdCirk+upcNTvV7Fp4oXuNL_34v4py5ncw@mail.gmail.com>
To: freebsd-usb@freebsd.org
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Subject: external usb3 disk on usb2 port full spd only
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Hello,

i have problem with my CH11 ADATA 2.5 UBS 3.0 HDD connected to USB 2.0.
Tested on 9.0-RELEASE-p3 and 9.1-RC1

# dmesg
usbus0: 12Mbps Full Speed USB v1.0
usbus1: 480Mbps High Speed USB v2.0
usbus2: 12Mbps Full Speed USB v1.0
usbus3: 480Mbps High Speed USB v2.0
usbus4: 12Mbps Full Speed USB v1.0
usbus5: 12Mbps Full Speed USB v1.0
usbus6: 480Mbps High Speed USB v2.0
ugen0.1: <ATI> at usbus0
uhub0: <ATI OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus0
ugen1.1: <ATI> at usbus1
uhub1: <ATI EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus1
ugen2.1: <ATI> at usbus2
uhub2: <ATI OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus2
ugen3.1: <ATI> at usbus3
uhub3: <ATI EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus3
ugen4.1: <ATI> at usbus4
uhub4: <ATI OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus4
ugen5.1: <ATI> at usbus5
uhub5: <ATI OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus5
ugen6.1: <ATI> at usbus6
uhub6: <ATI EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus6

ugen0.2: <ADATA> at usbus0
umass0: <ADATA CH11, class 0/0, rev 2.10/1.00, addr 2> on usbus0
umass0:  SCSI over Bulk-Only; quirks = 0x0100
umass0:6:0:-1: Attached to scbus6
(probe0:umass-sim0:0:0:0): REPORT LUNS. CDB: a0 0 0 0 0 0 0 0 0 10 0 0
(probe0:umass-sim0:0:0:0): CAM status: SCSI Status Error
(probe0:umass-sim0:0:0:0): SCSI status: Check Condition
(probe0:umass-sim0:0:0:0): SCSI sense: ILLEGAL REQUEST asc:20,0
(Invalid command operation code)
da0 at umass-sim0 bus 0 scbus6 target 0 lun 0
da0: <ADATA CH11 GN00> Fixed Direct Access SCSI-5 device
da0: 1.000MB/s transfers
da0: 476940MB (976773168 512 byte sectors: 255H 63S/T 60801C)

# usbconfig
ugen0.2: <CH11 ADATA> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON

any idea why is only 1MB/s transfer? is it possible to force high
speed on that device?

Thanks Beam