Comment 4 for bug 1000424

This kernel is has that patch that will be accepted by upstream so, please test this kernel in http://kernel.ubuntu.com/~manjo/precise/lp1000424-usb/

Please post results (dmesg snip) like I have done below for USB 3.0 port and USB 2.0 ports on your system.

I tested this kernel on a Lenovo system:

Test results
=============

USB 3.0 device connected to SuperSpeed port
--------------------------------------------
[ 34.694033] usb 4-1: new SuperSpeed USB device number 2 using xhci_hcd
[ 34.712925] scsi6 : usb-storage 4-1:1.0
[ 35.709947] scsi 6:0:0:0: Direct-Access JetFlash Transcend 16GB 1.00 PQ: 0 ANSI: 5
[ 35.710886] sd 6:0:0:0: Attached scsi generic sg3 type 0
[ 35.711475] sd 6:0:0:0: [sdc] 30871552 512-byte logical blocks: (15.8 GB/14.7 GiB)
[ 35.712721] sd 6:0:0:0: [sdc] Write Protect is off
[ 35.712725] sd 6:0:0:0: [sdc] Mode Sense: 23 00 00 00
[ 35.712841] sd 6:0:0:0: [sdc] Write cache: disabled, read cache: disabled, doesn't support DPO or FUA
[ 35.714627] sdc: sdc1

USB 3.0 device connected to highspeed port
-------------------------------------------
[ 148.128616] usb 1-1.2: new high-speed USB device number 5 using ehci_hcd
[ 148.226040] scsi7 : usb-storage 1-1.2:1.0
[ 149.225645] scsi 7:0:0:0: Direct-Access JetFlash Transcend 16GB 1.00 PQ: 0 ANSI: 5
[ 149.227690] sd 7:0:0:0: Attached scsi generic sg3 type 0
[ 149.230196] sd 7:0:0:0: [sdc] 30871552 512-byte logical blocks: (15.8 GB/14.7 GiB)
[ 149.230555] sd 7:0:0:0: [sdc] Write Protect is off
[ 149.230563] sd 7:0:0:0: [sdc] Mode Sense: 23 00 00 00
[ 149.231333] sd 7:0:0:0: [sdc] Write cache: disabled, read cache: disabled, doesn't support DPO or FUA
[ 149.235822] sdc: sdc1
[ 149.238035] sd 7:0:0:0: [sdc] Attached SCSI removable disk