cannot detect USB3 external hard disk, uas the problem
Hello.
I have a Hitach Touro USB3 external hard disk. When I connected it to a
USB port (the one on the front of the case, it is usb2), my Debian
testing (amd64, running 3.2.0-3-amd64) does not detect the disk.
/var/log/syslog reports errors and I have pasted those further below.
Searching various webpages and forums resulted in narrowing down the
solution to removing the "uas" module:
$> sudo modprobe -r uas
Now, when I connect the same hard disk to the same physical usb port, it
is detected fine.
Can somebody explain why this problem occurs and if there is a better
solution?
Thanks.
HS.
The /var/log/syslog error message:
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Oct 20 11:58:37 red kernel: [130903.980090] usb 5-1: new high-speed USB
device number 3 using ehci_hcd
Oct 20 11:58:37 red kernel: [130904.115180] usb 5-1: New USB device
found, idVendor=4971, idProduct=1012
Oct 20 11:58:37 red kernel: [130904.115191] usb 5-1: New USB device
strings: Mfr=1, Product=2, SerialNumber=3
Oct 20 11:58:37 red kernel: [130904.115198] usb 5-1: Product: Touro
Mobile Pro
Oct 20 11:58:37 red kernel: [130904.115203] usb 5-1: Manufacturer:
Hitachi GST
Oct 20 11:58:37 red kernel: [130904.115208] usb 5-1: SerialNumber:
02100110712000000503
Oct 20 11:58:37 red mtp-probe: checking bus 5, device 3:
"/sys/devices/pci0000:00/0000:00:16.2/usb5/5-1"
Oct 20 11:58:37 red mtp-probe: bus: 5, device: 3 was not an MTP device
Oct 20 11:58:37 red kernel: [130904.190353] scsi8 : uas
Oct 20 11:58:37 red kernel: [130904.190455] usbcore: registered new
interface driver uas
Oct 20 11:58:37 red kernel: [130904.191620] Initializing USB Mass
Storage driver...
Oct 20 11:58:37 red kernel: [130904.191677] usbcore: registered new
interface driver usb-storage
Oct 20 11:58:37 red kernel: [130904.191678] USB Mass Storage support
registered.
Oct 20 11:58:41 red kernel: [130908.179280] scsi 8:0:0:0: Direct-Access
Hitachi Touro Mobile Pro A0D0 PQ: 0 ANSI: 4
Oct 20 11:58:48 red kernel: [130914.816021] scsi 8:0:0:0:
uas_eh_abort_handler tag 0
Oct 20 11:58:48 red kernel: [130914.816027] scsi 8:0:0:0:
uas_eh_device_reset_handler tag 0
Oct 20 11:58:48 red kernel: [130914.816029] scsi 8:0:0:0:
uas_eh_target_reset_handler tag 0
Oct 20 11:58:48 red kernel: [130914.816031] scsi 8:0:0:0:
uas_eh_bus_reset_handler tag 0
Oct 20 11:58:48 red kernel: [130914.928061] usb 5-1: reset high-speed
USB device number 3 using ehci_hcd
Oct 20 11:58:48 red kernel: [130915.066413] scsi 8:0:0:0: Device
offlined - not ready after error recovery
Oct 20 11:58:48 red kernel: [130915.066470] scsi 8:0:0:0: rejecting I/O
to offline device
Oct 20 11:58:48 red kernel: [130915.066486] scsi 8:0:0:0: rejecting I/O
to offline device
Oct 20 11:58:48 red kernel: [130915.067811] scsi 8:0:0:1: Enclosure
Hitachi SES A0D0 PQ: 0 ANSI: 4
Oct 20 11:58:48 red kernel: [130915.068030] scsi 8:0:0:2: uas_sense_old:
urb length 26 disagrees with IU sense data length 510, using 18 bytes of
sense data
Oct 20 11:58:48 red kernel: [130915.068762] sd 8:0:0:0: Attached scsi
generic sg5 type 0
Oct 20 11:58:48 red kernel: [130915.069145] scsi 8:0:0:1: Attached scsi
generic sg6 type 13
Oct 20 11:59:19 red kernel: [130945.888054] sd 8:0:0:0:
uas_eh_abort_handler tag 0
Oct 20 11:59:19 red kernel: [130945.888071] sd 8:0:0:0:
uas_eh_device_reset_handler tag 0
Oct 20 11:59:19 red kernel: [130945.888080] sd 8:0:0:0:
uas_eh_target_reset_handler tag 0
Oct 20 11:59:19 red kernel: [130945.888087] sd 8:0:0:0:
uas_eh_bus_reset_handler tag 0
Oct 20 11:59:19 red kernel: [130946.000070] usb 5-1: reset high-speed
USB device number 3 using ehci_hcd
Oct 20 11:59:19 red kernel: [130946.133919] sd 8:0:0:0: Device offlined
- not ready after error recovery
Oct 20 11:59:19 red kernel: [130946.133992] sd 8:0:0:0: rejecting I/O to
offline device
Oct 20 11:59:19 red kernel: [130946.134013] sd 8:0:0:0: rejecting I/O to
offline device
Oct 20 11:59:19 red kernel: [130946.134024] sd 8:0:0:0: rejecting I/O to
offline device
Oct 20 11:59:19 red kernel: [130946.134032] sd 8:0:0:0: [sde] READ
CAPACITY failed
Oct 20 11:59:19 red kernel: [130946.134037] sd 8:0:0:0: [sde] Result:
hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
Oct 20 11:59:19 red kernel: [130946.134046] sd 8:0:0:0: [sde] Sense not
available.
Oct 20 11:59:19 red kernel: [130946.134056] sd 8:0:0:0: rejecting I/O to
offline device
Oct 20 11:59:19 red kernel: [130946.134065] sd 8:0:0:0: [sde] Write
Protect is off
Oct 20 11:59:19 red kernel: [130946.134072] sd 8:0:0:0: [sde] Mode
Sense: 00 00 00 00
Oct 20 11:59:19 red kernel: [130946.134080] sd 8:0:0:0: rejecting I/O to
offline device
Oct 20 11:59:19 red kernel: [130946.134088] sd 8:0:0:0: [sde] Asking for
cache data failed
Oct 20 11:59:19 red kernel: [130946.134094] sd 8:0:0:0: [sde] Assuming
drive cache: write through
Oct 20 11:59:19 red kernel: [130946.134506] sd 8:0:0:0: [sde] Attached
SCSI disk
Oct 20 11:59:19 red kernel: [130946.135481] ses 8:0:0:1: Attached
Enclosure device
Oct 20 11:59:19 red ata_id[24551]: unable to open '/dev/sde'
#########################################################
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