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SubjectUSB 2.0 and USB Sony DRU-500A unreliable

I have problems getting my Sony DRU-500A on an external USB 2.0 enclosure
working reliably with my IOGear USB 2.0 card on any of the late
2.5.x/2.6.0-test kernels. The enclosure is a generic "Made in China"
brand (PPA, Inc?). The drive seems to read data fine for a little while
and then just "shuts down" and stops reading, irregardless of what kind
of media I have in it. This same configuration (exact same hardware)
works fine under Windows. :(

Attached is all the data about the various components I thought might be
useful and the output of UMass debug right when it starts to fail. If
there is some more data needed, or I'm sending to the wrong list, or
ideas for things to try please let me know.
-Scott

--
Scott Lampert
<scott@lampert.org>
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
-Benjamin Franklin, 1759

Public Key: http://www.lampert.org/pubkey/




kernel log:

Aug 23 08:59:05 [kernel] usb-storage: *** thread awakened.
Aug 23 08:59:05 [kernel] usb-storage: Status code 0; transferred 31/31
Aug 23 08:59:05 [kernel] usb-storage: Status code 0; transferred 131072/131072
Aug 23 08:59:05 [kernel] usb-storage: Status code 0; transferred 13/13
Aug 23 08:59:05 [kernel] usb-storage: queuecommand called
Aug 23 08:59:05 [kernel] usb-storage: *** thread awakened.
Aug 23 08:59:05 [kernel] usb-storage: Status code 0; transferred 31/31
Aug 23 08:59:05 [kernel] usb-storage: Status code 0; transferred 131072/131072
Aug 23 08:59:05 [kernel] usb-storage: Status code 0; transferred 13/13
Aug 23 08:59:05 [kernel] usb-storage: queuecommand called
Aug 23 08:59:05 [kernel] usb-storage: *** thread awakened.
Aug 23 08:59:05 [kernel] usb-storage: Status code 0; transferred 31/31
Aug 23 08:59:05 [kernel] usb-storage: Status code -71; transferred 116736/131072
Aug 23 08:59:11 [kernel] usb-storage: Soft reset: clearing bulk-in endpoint halt
Aug 23 08:59:11 [kernel] usb-storage: usb_stor_clear_halt: result = 0
Aug 23 08:59:11 [kernel] usb-storage: usb_stor_clear_halt: result = 0
Aug 23 08:59:11 [kernel] usb-storage: queuecommand called
Aug 23 08:59:11 [kernel] usb-storage: *** thread awakened.
Aug 23 08:59:11 [kernel] usb-storage: Status code 0; transferred 31/31
Aug 23 08:59:11 [kernel] usb-storage: Status code -32; transferred 0/131072
Aug 23 08:59:11 [kernel] usb-storage: usb_stor_clear_halt: result = 0
Aug 23 08:59:11 [kernel] usb-storage: Status code -75; transferred 0/13
Aug 23 08:59:17 [kernel] usb-storage: Soft reset: clearing bulk-in endpoint halt
Aug 23 08:59:17 [kernel] usb-storage: usb_stor_clear_halt: result = 0
Aug 23 08:59:17 [kernel] usb-storage: usb_stor_clear_halt: result = 0
Aug 23 08:59:17 [kernel] usb-storage: queuecommand called
Aug 23 08:59:17 [kernel] usb-storage: *** thread awakened.
Aug 23 08:59:17 [kernel] usb-storage: Status code 0; transferred 31/31
Aug 23 08:59:17 [kernel] usb-storage: Status code 0; transferred 131072/131072
Aug 23 08:59:17 [kernel] usb-storage: Status code -75; transferred 0/13
Aug 23 08:59:23 [kernel] usb-storage: Soft reset: clearing bulk-in endpoint halt
Aug 23 08:59:23 [kernel] usb-storage: usb_stor_clear_halt: result = 0
Aug 23 08:59:23 [kernel] usb-storage: usb_stor_clear_halt: result = 0
Aug 23 08:59:23 [kernel] SCSI error : <1 0 0 0> return code = 0x70000
Aug 23 08:59:23 [kernel] usb-storage: *** thread awakened.
Aug 23 08:59:23 [kernel] usb-storage: Status code 0; transferred 31/31
Aug 23 08:59:23 [kernel] usb-storage: Status code -32; transferred 0/129024
Aug 23 08:59:23 [kernel] usb-storage: usb_stor_clear_halt: result = 0
Aug 23 08:59:23 [kernel] usb-storage: Status code 0; transferred 13/13
Aug 23 08:59:29 [kernel] usb-storage: Soft reset: clearing bulk-in endpoint halt
Aug 23 08:59:29 [kernel] usb-storage: usb_stor_clear_halt: result = 0
Aug 23 08:59:29 [kernel] usb-storage: usb_stor_clear_halt: result = 0
Aug 23 08:59:29 [kernel] SCSI error : <1 0 0 0> return code = 0x70000
Aug 23 08:59:29 [kernel] usb-storage: *** thread awakened.
Aug 23 08:59:29 [kernel] usb-storage: Status code -32; transferred 0/31
Aug 23 08:59:29 [kernel] usb-storage: usb_stor_clear_halt: result = 0
Aug 23 08:59:35 [kernel] usb-storage: Soft reset: clearing bulk-in endpoint halt
Aug 23 08:59:35 [kernel] usb-storage: usb_stor_clear_halt: result = 0
Aug 23 08:59:35 [kernel] usb-storage: usb_stor_clear_halt: result = 0
Aug 23 08:59:35 [kernel] SCSI error : <1 0 0 0> return code = 0x70000
Aug 23 08:59:35 [kernel] usb-storage: *** thread awakened.
Aug 23 08:59:35 [kernel] usb-storage: Status code 0; transferred 31/31
Aug 23 08:59:35 [kernel] usb-storage: Status code -32; transferred 0/4096
Aug 23 08:59:35 [kernel] usb-storage: usb_stor_clear_halt: result = 0
Aug 23 08:59:35 [kernel] usb-storage: Status code 0; transferred 13/13
Aug 23 08:59:35 [kernel] usb-storage: Status code 0; transferred 31/31
Aug 23 08:59:35 [kernel] usb-storage: Status code 0; transferred 18/18
Aug 23 08:59:35 [kernel] usb-storage: Status code 0; transferred 13/13
Aug 23 08:59:35 [kernel] end_request: I/O error, dev sr1, sector 59800
Aug 23 08:59:35 [kernel] usb-storage: *** thread awakened.
Aug 23 08:59:35 [kernel] usb-storage: Status code 0; transferred 31/31
Aug 23 08:59:35 [kernel] usb-storage: Status code 0; transferred 124928/124928
Aug 23 08:59:35 [kernel] usb-storage: Status code 0; transferred 13/13
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 20679
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 20679
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 45289
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 45289
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 53963
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 53963
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 54057
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 54057
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 54060
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 54060
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 54061
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 54061
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 54132
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 54132
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 68458
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 68458
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 68459
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 68459
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 68526
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 68526
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 68527
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 68527
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 68537
Aug 23 08:59:36 [kernel] Buffer I/O error on device sr1, logical block 68537
Aug 23 09:00:46 [kernel] usb-storage: queuecommand called
Aug 23 09:00:46 [kernel] usb-storage: *** thread awakened.
Aug 23 09:00:46 [kernel] usb-storage: Status code 0; transferred 31/31
Aug 23 09:00:46 [kernel] usb-storage: Status code 0; transferred 13/13
Aug 23 09:02:08 [kernel] usbfs: process 5350 (lsusb) did not claim interface 0 b
efore use
Aug 23 09:02:08 [kernel] usbfs: USBDEVFS_CONTROL failed cmd lsusb dev 4 rqt 128
rq 6 len 256 ret -32
Aug 23 09:02:08 [kernel] usbfs: USBDEVFS_CONTROL failed cmd lsusb dev 4 rqt 128
rq 6 len 256 ret -32
Aug 23 09:02:09 [kernel] usbfs: process 5350 (lsusb) did not claim interface 0 b
efore use
Aug 23 09:02:09 [kernel] usbfs: USBDEVFS_CONTROL failed cmd lsusb dev 2 rqt 128
rq 6 len 256 ret -32
Aug 23 09:02:09 [kernel] usbfs: USBDEVFS_CONTROL failed cmd lsusb dev 2 rqt 128
rq 6 len 256 ret -32

lsusb:

Bus 001 Device 002: ID 0402:5621 ALi Corp.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 Interface
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x0402 ALi Corp.
idProduct 0x5621
bcdDevice 1.03
iManufacturer 0
iProduct 1 USB 2.0 Storage Device
iSerial 2 00042222200000019862
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 32
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk (Zip)
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type none
wMaxPacketSize 512
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type none
wMaxPacketSize 512
bInterval 0
Language IDs: (length=4)
0409 English(US)

Bus 001 Device 001: ID 0000:0000
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0
bDeviceProtocol 1
bMaxPacketSize0 8
idVendor 0x0000
idProduct 0x0000
bcdDevice 2.06
iManufacturer 3 Linux 2.6.0-test3 ehci_hcd
iProduct 2 EHCI Host Controller
iSerial 1 0000:02:0d.3
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x40
Self Powered
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type none
wMaxPacketSize 2
bInterval 12
Language IDs: (length=4)
0409 English(US)


lspci:

02:0d.0 USB Controller: Acer Laboratories Inc. [ALi] USB 1.1 Controller (rev 03) (prog-if 10 [OHCI])
Subsystem: Acer Laboratories Inc. [ALi] USB 1.1 Controller
Flags: bus master, 66Mhz, medium devsel, latency 32, IRQ 10
Memory at eb000000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [60] Power Management version 2

02:0d.3 USB Controller: Acer Laboratories Inc. [ALi] USB 2.0 Controller (rev 01) (prog-if 20 [EHCI])
Subsystem: Acer Laboratories Inc. [ALi] USB 2.0 Controller
Flags: bus master, 66Mhz, medium devsel, latency 32, IRQ 9
Memory at ea800000 (32-bit, non-prefetchable) [size=256]
Capabilities: [50] Power Management version 2
Capabilities: [58] #0a [2090]


/proc/scsi/usb-storage/1:

Host scsi1: usb-storage
Vendor: Unknown
Product: USB 2.0 Storage Device
Serial Number: 00042222200000019862
Protocol: Transparent SCSI
Transport: Bulk
Quirks:


/proc/scsi/sci:

Host: scsi1 Channel: 00 Id: 00 Lun: 00
Vendor: SONY Model: DVD RW DRU-500A Rev: 1.0g
Type: CD-ROM ANSI SCSI revision: 02
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