Alan,I am attaching the usbmon trace after the drive has been plugged into the USB-2 port. Record of the drive in stall should occur around the file offset 87808 (decimal). The log was done on the 3.12.7 kernel without CONFIG_PM. Should I do a usbmon trace on my regular kernel with CONFIG_PM as well?
dmesg transcript: root@bach:/tmp# dmesg usb 4-1.2: new high-speed USB device number 5 using ehci-pci usb 4-1.2: New USB device found, idVendor=1058, idProduct=1230 usb 4-1.2: New USB device strings: Mfr=2, Product=3, SerialNumber=1 usb 4-1.2: Product: My Book 1230 usb 4-1.2: Manufacturer: Western Digital usb 4-1.2: SerialNumber: 574D43344E30323438393836 usb-storage 4-1.2:1.0: USB Mass Storage device detected scsi6 : usb-storage 4-1.2:1.0 usbcore: registered new interface driver usb-storage scsi 6:0:0:0: Direct-Access WD My Book 1230 1050 PQ: 0 ANSI: 6 scsi 6:0:0:1: Enclosure WD SES Device 1050 PQ: 0 ANSI: 6 sd 6:0:0:0: Attached scsi generic sg2 type 0 scsi 6:0:0:1: Attached scsi generic sg3 type 13 sd 6:0:0:0: [sdb] Spinning up disk... .........ready sd 6:0:0:0: [sdb] 732558336 4096-byte logical blocks: (3.00 TB/2.72 TiB) sd 6:0:0:0: [sdb] Write Protect is off sd 6:0:0:0: [sdb] Mode Sense: 53 00 10 08 sd 6:0:0:0: [sdb] No Caching mode page found sd 6:0:0:0: [sdb] Assuming drive cache: write through sd 6:0:0:0: [sdb] 732558336 4096-byte logical blocks: (3.00 TB/2.72 TiB) sd 6:0:0:0: [sdb] No Caching mode page found sd 6:0:0:0: [sdb] Assuming drive cache: write through sdb: sdb1 sd 6:0:0:0: [sdb] 732558336 4096-byte logical blocks: (3.00 TB/2.72 TiB) sd 6:0:0:0: [sdb] No Caching mode page found sd 6:0:0:0: [sdb] Assuming drive cache: write through sd 6:0:0:0: [sdb] Attached SCSI disk usb 4-1.2: reset high-speed USB device number 5 using ehci-pci Thank you! Best regards, Peter On 15.01.2014 18:30, Alan Stern wrote:
On Wed, 15 Jan 2014, Peter Palúch wrote:The interesting thing is that the same happens even if the drive is plugged into an USB 2.0 port in the same notebook:That is an important point.Can you post a usbmon trace similar to the earlier one, but with the drive plugged into the USB-2 port?
Attachment:
usbmon-2.0.txt.bz2
Description: application/bzip
