USB hard disk ON and OFF

[Alain Muls]

Hi All

On 5 March 2011 04:08,  <ubuntu-users-request at lists.ubuntu.com> wrote:
> Message: 6
> Date: Fri, 04 Mar 2011 18:00:44 -0500
> From: Jonathan Dlouhy <dlouhy55 at gmail.com>
> To: tcoulon at decoulon.ch, "Ubuntu user technical support,        not for
>        general discussions" <ubuntu-users at lists.ubuntu.com>
> Subject: Re: USB hard disk ON and OFF
> Message-ID: <4D716F1C.5000302 at gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> On 03/04/2011 05:51 PM, Thierry de Coulon wrote:
>> On Friday 04 March 2011 09:36:33 pm Alain Muls wrote:
>>> Hi
>>>
>>> I have an external USB HD which I labeled AMHD.
>>> When I insert the HD it mounts at /media/AMHD as expected, but every
>>> minute or so the HD umounts and remounts.
>>> How can I avoid this behaviour which is very annoying?
>>>
>>> Tx/Alain
>> I've got several USB HD's (2.5"&  3.5", PATA over USB as well as SATA over
>> USB) and I've never seen this (although I did have a drive that would "die",
>> could no more write on it after some time - the HD itself seemed faulty).
>>
>> Anyway, I doubt this is a Linux/Ubuntu problem, I'd look for the problem on
>> the drive itself. Can you test it with another OS? Faulty USB connector? How
>> is the drive powered ? Anything in the logs?
>>
>> Thierry
>>
>>
> It would also help to have more info, which version of Ubuntu you are
> running, updated, etc.

I run Lucid Lynx and I update whenever the notifier says updates are available.

I checked the messages file and found this (hope it is relevant)

Mar  4 16:52:54 geodprof kernel: [33727.052118] usb 2-4: USB
disconnect, address 10
Mar  4 16:52:54 geodprof kernel: [33727.313035] usb 2-4: new high
speed USB device using ehci_hcd and address 11
Mar  4 16:52:55 geodprof kernel: [33727.534330] scsi12 : usb-storage 2-4:1.0
Mar  4 16:52:56 geodprof kernel: [33728.536991] scsi 12:0:0:0:
Direct-Access     ST310005 28AS                  PQ: 0 ANSI: 2 CCS
Mar  4 16:52:56 geodprof kernel: [33728.538773] sd 12:0:0:0: Attached
scsi generic sg2 type 0
Mar  4 16:52:56 geodprof kernel: [33728.539451] sd 12:0:0:0: [sde]
1953525168 512-byte logical blocks: (1.00 TB/931 GiB)
Mar  4 16:52:56 geodprof kernel: [33728.540691] sd 12:0:0:0: [sde]
Write Protect is off
Mar  4 16:52:56 geodprof kernel: [33728.544849]  sde: sde1
Mar  4 16:52:56 geodprof kernel: [33728.547345] sd 12:0:0:0: [sde]
Attached SCSI disk
Mar  4 16:52:58 geodprof kernel: [33730.636312] EXT4-fs (sde1):
warning: maximal mount count reached, running e2fsck is recommended
Mar  4 16:52:58 geodprof kernel: [33730.704425] EXT4-fs (sde1):
recovery complete
Mar  4 16:52:58 geodprof kernel: [33730.704434] EXT4-fs (sde1):
mounted filesystem with ordered data mode. Opts: (null)
Mar  4 16:53:06 geodprof kernel: [33739.368984] usb 2-4: USB
disconnect, address 11
Mar  4 16:53:07 geodprof kernel: [33739.628209] usb 2-4: new high
speed USB device using ehci_hcd and address 12
Mar  4 16:53:07 geodprof kernel: [33739.853719] scsi13 : usb-storage 2-4:1.0
Mar  4 16:53:08 geodprof kernel: [33740.853860] scsi 13:0:0:0:
Direct-Access     ST310005 28AS                  PQ: 0 ANSI: 2 CCS
Mar  4 16:53:08 geodprof kernel: [33740.854746] sd 13:0:0:0: Attached
scsi generic sg2 type 0
Mar  4 16:53:08 geodprof kernel: [33740.856040] sd 13:0:0:0: [sde]
1953525168 512-byte logical blocks: (1.00 TB/931 GiB)
Mar  4 16:53:08 geodprof kernel: [33740.857688] sd 13:0:0:0: [sde]
Write Protect is off
Mar  4 16:53:08 geodprof kernel: [33740.859689]  sde: sde1
Mar  4 16:53:08 geodprof kernel: [33740.861958] sd 13:0:0:0: [sde]
Attached SCSI disk
Mar  4 16:53:10 geodprof kernel: [33742.773288] EXT4-fs (sde1):
warning: maximal mount count reached, running e2fsck is recommended
Mar  4 16:53:10 geodprof kernel: [33742.841681] EXT4-fs (sde1):
recovery complete
Mar  4 16:53:10 geodprof kernel: [33742.841689] EXT4-fs (sde1):
mounted filesystem with ordered data mode. Opts: (null)


Tx/Alain