I'm trying out USB3.0 and connected a hard disk enclosure with a known-good
hard disk to an USB 3.0 express-card.
From dmesg, it's able to recognize the card and disk, but I can't even use
"fdisk /dev/sdb" ... what else do I need?
xhci_hcd 0000:05:00.0: enabling device (0000 -> 0002)
xhci_hcd 0000:05:00.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19
xhci_hcd 0000:05:00.0: setting latency timer to 64
xhci_hcd 0000:05:00.0: xHCI Host Controller
xhci_hcd 0000:05:00.0: new USB bus registered, assigned bus number 3
xhci_hcd 0000:05:00.0: irq 19, io mem 0xf0000000
usb usb3: No SuperSpeed endpoint companion for config 1 interface 0
altsetting 0 ep 129: using minimum values
xHCI xhci_add_endpoint called for root hub
xHCI xhci_check_bandwidth called for root hub
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 4 ports detected
hub 3-0:1.0: unable to enumerate USB device on port 3
usb 3-1: new SuperSpeed USB device using xhci_hcd and address 2
xhci_hcd 0000:05:00.0: WARN: short transfer on control ep
xhci_hcd 0000:05:00.0: WARN: short transfer on control ep
xhci_hcd 0000:05:00.0: WARN: short transfer on control ep
xhci_hcd 0000:05:00.0: WARN: short transfer on control ep
Initializing USB Mass Storage driver...
scsi7 : usb-storage 3-2:1.0
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
scsi 7:0:0:0: Direct-Access ASMT 2105 0 PQ: 0 ANSI: 0
sd 7:0:0:0: Attached scsi generic sg1 type 0
sd 7:0:0:0: [sdb] Attached SCSI removable disk
# here's the same disk connected to USB2.0 port showing the partition table and
fdisk works
Initializing USB Mass Storage driver...
scsi6 : usb-storage 1-1.2:1.0
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
scsi 6:0:0:0: Direct-Access SAMSUNG MMDOE56G5MXP-0VB VBM1 PQ: 0 ANSI: 0
sd 6:0:0:0: Attached scsi generic sg1 type 0
sd 6:0:0:0: [sdb] 500118192 512-byte logical blocks: (256 GB/238 GiB)
sd 6:0:0:0: [sdb] Write Protect is off
sd 6:0:0:0: [sdb] Mode Sense: 23 00 00 00
sd 6:0:0:0: [sdb] Assuming drive cache: write through
sd 6:0:0:0: [sdb] Assuming drive cache: write through
sdb: sdb1 sdb2 sdb3 sdb4 < sdb5 sdb6 sdb7 sdb8 sdb9 sdb10 sdb11 sdb12 sdb13
sdb14 sdb15 >
sd 6:0:0:0: [sdb] Assuming drive cache: write through
sd 6:0:0:0: [sdb] Attached SCSI disk
It seems USB3.0 cannot detect the disk. USB2.0 says it's "SAMSUNG
MMDOE56G5MXP-0VB VBM1 PQ: 0 ANSI: 0" and that's same as plug straight to
the notebook SATA controller. I checked linux/drivers/scsi/sd.c and
sdkp->media_present = 0 so skipped sd_read_capacity().
Running on Linux-2.6.35. Is this a USB3.0 problem or usb-storage issue?
How do I go about to debug this?
Thanks,
Jeff
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