I too have this problem on when I plug my Hitatchi 2TB Touro Desk Pro
into my laptop running Ubuntu 12.10, Kernel Linux 3.5.0-19-generic,
GNOME 3.6.0

Dec 16 11:45:53 coralreef kernel: [ 2823.716084] usb 1-3: reset high-speed USB 
device number 18 using ehci_hcd
Dec 16 11:46:08 coralreef kernel: [ 2838.828080] usb 1-3: device descriptor 
read/64, error -110
Dec 16 11:46:23 coralreef kernel: [ 2854.044087] usb 1-3: device descriptor 
read/64, error -110
Dec 16 11:46:23 coralreef kernel: [ 2854.260081] usb 1-3: reset high-speed USB 
device number 18 using ehci_hcd
Dec 16 11:46:38 coralreef kernel: [ 2869.372083] usb 1-3: device descriptor 
read/64, error -110
Dec 16 11:46:53 coralreef kernel: [ 2884.588095] usb 1-3: device descriptor 
read/64, error -110
Dec 16 11:46:54 coralreef kernel: [ 2884.804063] usb 1-3: reset high-speed USB 
device number 18 using ehci_hcd
Dec 16 11:46:59 coralreef kernel: [ 2890.216071] usb 1-3: device not accepting 
address 18, error -71
Dec 16 11:46:59 coralreef kernel: [ 2890.328097] usb 1-3: reset high-speed USB 
device number 18 using ehci_hcd
Dec 16 11:47:05 coralreef kernel: [ 2895.740074] usb 1-3: device not accepting 
address 18, error -71
Dec 16 11:47:05 coralreef kernel: [ 2895.740142] usb 1-3: USB disconnect, 
device number 18
Dec 16 11:47:05 coralreef kernel: [ 2895.740176] sd 6:0:0:0: Device offlined - 
not ready after error recovery
Dec 16 11:47:05 coralreef kernel: [ 2895.740196] sd 6:0:0:0: [sdb] Unhandled 
error code
Dec 16 11:47:05 coralreef kernel: [ 2895.740201] sd 6:0:0:0: [sdb]  
Dec 16 11:47:05 coralreef kernel: [ 2895.740206] Result: hostbyte=DID_ERROR 
driverbyte=DRIVER_OK
Dec 16 11:47:05 coralreef kernel: [ 2895.740211] sd 6:0:0:0: [sdb] CDB: 
Dec 16 11:47:05 coralreef kernel: [ 2895.740214] Read(10): 28 00 55 37 1b c0 00 
00 f0 00
Dec 16 11:47:05 coralreef kernel: [ 2895.740237] end_request: I/O error, dev 
sdb, sector 1429674944
Dec 16 11:47:05 coralreef kernel: [ 2895.740244] quiet_error: 23 callbacks 
suppressed
Dec 16 11:47:05 coralreef kernel: [ 2895.740249] Buffer I/O error on device 
sdb1, logical block 178709112
Dec 16 11:47:05 coralreef kernel: [ 2895.740261] Buffer I/O error on device 
sdb1, logical block 178709113
Dec 16 11:47:05 coralreef kernel: [ 2895.740267] Buffer I/O error on device 
sdb1, logical block 178709114
Dec 16 11:47:05 coralreef kernel: [ 2895.740272] Buffer I/O error on device 
sdb1, logical block 178709115
Dec 16 11:47:05 coralreef kernel: [ 2895.740278] Buffer I/O error on device 
sdb1, logical block 178709116
Dec 16 11:47:05 coralreef kernel: [ 2895.740283] Buffer I/O error on device 
sdb1, logical block 178709117
Dec 16 11:47:05 coralreef kernel: [ 2895.740289] Buffer I/O error on device 
sdb1, logical block 178709118
Dec 16 11:47:05 coralreef kernel: [ 2895.740294] Buffer I/O error on device 
sdb1, logical block 178709119
Dec 16 11:47:05 coralreef kernel: [ 2895.740300] Buffer I/O error on device 
sdb1, logical block 178709120
Dec 16 11:47:05 coralreef kernel: [ 2895.740314] Buffer I/O error on device 
sdb1, logical block 178709121
Dec 16 11:47:05 coralreef kernel: [ 2895.740464] sd 6:0:0:0: [sdb] Unhandled 
error code
Dec 16 11:47:05 coralreef kernel: [ 2895.740467] sd 6:0:0:0: [sdb]  
Dec 16 11:47:05 coralreef kernel: [ 2895.740469] Result: 
hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
Dec 16 11:47:05 coralreef kernel: [ 2895.740472] sd 6:0:0:0: [sdb] CDB: 
Dec 16 11:47:05 coralreef kernel: [ 2895.740473] Read(10): 28 00 55 37 1c b0 00 
00 10 00
Dec 16 11:47:05 coralreef kernel: [ 2895.740484] end_request: I/O error, dev 
sdb, sector 1429675184
Dec 16 11:47:05 coralreef ntfs-3g[3467]: ntfs_attr_pread_i: ntfs_pread failed: 
Input/output error
Dec 16 11:47:05 coralreef ntfs-3g[3467]: ntfs_attr_pread error reading 
'/.Other/OtherLng.tar.gz.pgp' at offset 290324480: 131072 <> -1: Input/output 
error
Dec 16 11:47:05 coralreef ntfs-3g[3467]: ntfs_attr_pread_i: ntfs_pread failed: 
Input/output error
Dec 16 11:47:05 coralreef ntfs-3g[3467]: ntfs_attr_pread error reading 
'/.Other/OtherLng.tar.gz.pgp' at offset 290455552: 131072 <> -1: Input/output 
error
Dec 16 11:47:05 coralreef ntfs-3g[3467]: ntfs_attr_pread_i: ntfs_pread failed: 
Input/output error
Dec 16 11:47:05 coralreef ntfs-3g[3467]: ntfs_attr_pread error reading 
'/.Other/OtherLng.tar.gz.pgp' at offset 290324480: 4096 <> -1: Input/output 
error
Dec 16 11:47:05 coralreef kernel: [ 2895.952063] usb 1-3: new high-speed USB 
device number 19 using ehci_hcd
Dec 16 11:47:05 coralreef udisksd[1871]: Cleaning up mount point 
/media/clownfish/Earth (device 8:17 no longer exist)
Dec 16 11:47:20 coralreef kernel: [ 2911.064130] usb 1-3: device descriptor 
read/64, error -110
Dec 16 11:47:35 coralreef kernel: [ 2926.280061] usb 1-3: device descriptor 
read/64, error -110
Dec 16 11:47:35 coralreef kernel: [ 2926.496104] usb 1-3: new high-speed USB 
device number 20 using ehci_hcd
Dec 16 11:47:51 coralreef kernel: [ 2941.608123] usb 1-3: device descriptor 
read/64, error -110
Dec 16 11:48:06 coralreef kernel: [ 2956.824082] usb 1-3: device descriptor 
read/64, error -110
Dec 16 11:48:06 coralreef kernel: [ 2957.040066] usb 1-3: new high-speed USB 
device number 21 using ehci_hcd
Dec 16 11:48:11 coralreef kernel: [ 2962.452114] usb 1-3: device not accepting 
address 21, error -71
Dec 16 11:48:11 coralreef kernel: [ 2962.564127] usb 1-3: new high-speed USB 
device number 22 using ehci_hcd
Dec 16 11:48:17 coralreef kernel: [ 2967.976103] usb 1-3: device not accepting 
address 22, error -71
Dec 16 11:48:17 coralreef kernel: [ 2967.976143] hub 1-0:1.0: unable to 
enumerate USB device on port 3
Dec 16 11:48:17 coralreef kernel: [ 2968.244086] usb 3-1: new full-speed USB 
device number 4 using uhci_hcd
Dec 16 11:48:32 coralreef kernel: [ 2983.356081] usb 3-1: device descriptor 
read/64, error -110
Dec 16 11:48:33 coralreef ntfs-3g[3467]: Unmounting /dev/sdb1 (Earth)
Dec 16 11:48:47 coralreef kernel: [ 2998.572096] usb 3-1: device descriptor 
read/64, error -110
Dec 16 11:48:48 coralreef kernel: [ 2998.788080] usb 3-1: new full-speed USB 
device number 5 using uhci_hcd
Dec 16 11:49:03 coralreef kernel: [ 3013.900078] usb 3-1: device descriptor 
read/64, error -110
Dec 16 11:49:18 coralreef kernel: [ 3029.116131] usb 3-1: device descriptor 
read/64, error -110
Dec 16 11:49:18 coralreef kernel: [ 3029.332119] usb 3-1: new full-speed USB 
device number 6 using uhci_hcd
Dec 16 11:49:24 coralreef kernel: [ 3034.744074] usb 3-1: device not accepting 
address 6, error -84
Dec 16 11:49:24 coralreef kernel: [ 3034.856120] usb 3-1: new full-speed USB 
device number 7 using uhci_hcd
Dec 16 11:49:29 coralreef kernel: [ 3040.268196] usb 3-1: device not accepting 
address 7, error -84
Dec 16 11:49:29 coralreef kernel: [ 3040.268323] hub 3-0:1.0: unable to 
enumerate USB device on port 1
Dec 16 11:50:40 coralreef kernel: [ 3110.896099] usb 1-6: new high-speed USB 
device number 23 using ehci_hcd
Dec 16 11:50:55 coralreef kernel: [ 3126.008094] usb 1-6: device descriptor 
read/64, error -110
Dec 16 11:51:10 coralreef kernel: [ 3141.224096] usb 1-6: device descriptor 
read/64, error -110
Dec 16 11:51:10 coralreef kernel: [ 3141.440064] usb 1-6: new high-speed USB 
device number 24 using ehci_hcd
Dec 16 11:51:25 coralreef kernel: [ 3156.552062] usb 1-6: device descriptor 
read/64, error -110
Dec 16 11:51:41 coralreef kernel: [ 3171.768067] usb 1-6: device descriptor 
read/64, error -110
Dec 16 11:51:41 coralreef kernel: [ 3171.984576] usb 1-6: new high-speed USB 
device number 25 using ehci_hcd
Dec 16 11:51:46 coralreef kernel: [ 3177.396043] usb 1-6: device not accepting 
address 25, error -71
Dec 16 11:51:46 coralreef kernel: [ 3177.508104] usb 1-6: new high-speed USB 
device number 26 using ehci_hcd
Dec 16 11:51:52 coralreef kernel: [ 3182.920107] usb 1-6: device not accepting 
address 26, error -71
Dec 16 11:51:52 coralreef kernel: [ 3182.920145] hub 1-0:1.0: unable to 
enumerate USB device on port 6
Dec 16 11:51:52 coralreef kernel: [ 3183.188199] usb 4-2: new full-speed USB 
device number 2 using uhci_hcd
Dec 16 11:52:07 coralreef kernel: [ 3198.300133] usb 4-2: device descriptor 
read/64, error -110

** Changed in: linux (Ubuntu)
       Status: Expired => New

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Title:
   USB disconnect

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