My 1TB USB 3.0 was working fine earlier in Ubuntu as well as Windows. But lately it is not at all being detected in Ubuntu. It still works fine in Windows. I did update my Ubuntu to 12.10 but I am not sure if that caused the issue.

When I connect my HDD and run dmesg | tail:

[   47.804676] usb 4-3: >Device not responding to set address. 
[   48.008575] usb 4-3: >Device not responding to set address. 
[   48.212421] usb 4-3: >device not accepting address 9, error -71 
[   48.324451] usb 4-3: >Device not responding to set address. 
[   48.528340] usb 4-3: >Device not responding to set address. 
[   48.732165] usb 4-3: >device not accepting address 10, error -71 
[   48.844138] usb 4-3: >Device not responding to set address. 
[   49.048179] usb 4-3: >Device not responding to set address. 
[   49.251881] usb 4-3: >device not accepting address 11, error -71 
[   49.251907] hub 4-0:1.0: >unable to enumerate USB device on port 3

The output of sudo fdisk -l is :

Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00030cde

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1            2048  1332981759   666489856   83  Linux
/dev/sda2      1332981760  1953523711   310270976    5  Extended
/dev/sda5      1332983808  1349365759     8190976   82  Linux swap / Solaris
/dev/sda6      1349367808  1953523711   302077952    7  HPFS/NTFS/exFAT

Disk /dev/sdb: 120.0 GB, 120034123776 bytes
255 heads, 63 sectors/track, 14593 cylinders, total 234441648 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000a2519

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *        2048   103368703    51683328    7  HPFS/NTFS/exFAT
/dev/sdb2       103368704   154568703    25600000   83  Linux
/dev/sdb3       154568704   234440703    39936000    7  HPFS/NTFS/exFAT

/dev/sda and /dev/sdb are my 2 internal HDDs. But the external one which should be /dev/sdc is not even being shown though it is connected and the LED on the HDD is glowing.

Someone had suggested adding blacklist uas to /etc/modprobe.d/blacklist.conf. Tried that as well. But still not working. Can someone help me out.