unable to enumerate USB device: APCUSBD

[Tommy Trussell]

On Thu, Sep 6, 2012 at 7:07 AM, bill <william at techservsys.com> wrote:

>  On 9/5/2012 12:32 PM, Tommy Trussell wrote:
>
> On Sat, Sep 1, 2012 at 9:12 AM, william drescher <william at techservsys.com>wrote:
>
>> I have a APC 750 with the usb port connected to a 12.04 Unbutu system.
>>
>> After about a day of operation I start getting the following error:
>>
>> Aug 31 23:13:57 ubuntu3 kernel: [128564.632031] hub 2-0:1.0: unable to
>> enumerate USB device on port 3
>>
>> Checking the syslog I find the following repeated over and over, with the
>> device number going up by one each time:
>>
>> Aug 31 23:13:25 ubuntu3 kernel: [128532.951308] hub 2-0:1.0: port 3
>> disabled by hub (EMI?), re-enabling...
>> Aug 31 23:13:25 ubuntu3 kernel: [128532.952063] usb 2-3: USB disconnect,
>> device number 110
>> Aug 31 23:13:25 ubuntu3 kernel: [128532.952267] usb 2-3: ctrl urb status
>> -62 received
>> Aug 31 23:13:25 ubuntu3 kernel: [128533.260039] usb 2-3: new low-speed
>> USB device number 111 using ohci_hcd
>> ...
>> Aug 31 23:13:27 ubuntu3 kernel: [128534.796543] generic-usb
>> 0003:051D:0002.006F: hiddev0,hidraw2: USB HID v1.10 Device [American Power
>> Conversion Smart-UPS 750 FW:651.13.D USB FW:7.3] on
>> usb-0000:00:02.0-3/input0
>> Aug 31 23:13:33 ubuntu3 apcupsd[4213]: Communications with UPS restored.
>> ...
>> Aug 31 23:13:56 ubuntu3 kernel: [128563.596881] hub 2-0:1.0: port 3
>> disabled by hub (EMI?), re-enabling...
>> Aug 31 23:13:56 ubuntu3 kernel: [128563.597605] usb 2-3: USB disconnect,
>> device number 111
>> Aug 31 23:13:56 ubuntu3 kernel: [128563.597838] usb 2-3: ctrl urb status
>> -62 received
>> Aug 31 23:13:56 ubuntu3 kernel: [128563.900049] usb 2-3: new low-speed
>> USB device number 112 using ohci_hcd
>> Aug 31 23:13:56 ubuntu3 kernel: [128564.137852] usb 2-3: can't set config
>> #1, error -62
>> Aug 31 23:13:56 ubuntu3 kernel: [128564.138747] hub 2-0:1.0: port 3
>> disabled by hub (EMI?), re-enabling...
>> Aug 31 23:13:56 ubuntu3 kernel: [128564.139398] usb 2-3: USB disconnect,
>> device number 112
>>
>> until it reverts to this error message
>>
>>
>> Aug 31 23:13:56 ubuntu3 kernel: [128564.384041] hub 2-0:1.0: unable to
>> enumerate USB device on port 3
>> Aug 31 23:13:57 ubuntu3 kernel: [128564.632031] hub 2-0:1.0: unable to
>> enumerate USB device on port 3
>> Aug 31 2
>>
>> with the last message repeated 3 times a second after that.
>>
>> Does this suggest a problem with the APC unit ? (it is directly connected
>> to the computer port) or a ubuntu issue ?
>>
>> bill
>>
>>
>
>  I was curious about your question so I did a couple of Google searches
> and found a lot of reports of similar issues. I also have an APC UPS but I
> don't have anything connected to its USB port.
>
>  1) Was your Ubuntu 12.04 system upgraded from a previous version or a
> new install? A few of the reports indicated a problem with an old
> unsupported driver that could be disabled to eliminate the error.
>
> it was an upgrade.
>
>
>  2) For diagnostic purposes, you might try connecting the UPS via a USB
> hub to see if the error messages go away. You might also try connecting a
> USB keyboard or mouse to the system (if you aren't using them already) to
> see if you get a similar message. Some hardware apparently has trouble
> supporting old slow USB devices.
>
> good idea
>
>
> 3) Since you have the UPS connected to the USB port, do you also have some
>  special software that is monitoring it, or does the UPS port send a
> generic "power down" message after a period of time? If you are running
> some special software you might check to make sure it is compatible with
> Ubuntu 12.04. Have you recently tested the UPS shutdown by pulling the plug?
>
> I use APCUPSD.  It works fine on the other 2 servers that I just upgraded.
> If the UPS is not communicating, I can not test the shutdown.
>
> The thing that bothers me the most is the "port 3 disabled by hub (EMI?)"
> which makes me suspect the UPS
>
>
>  I don't have answers that might fix your issues, but I hope those
> questions (plus some searches of your own) get you closer to the answer.
>
>  thanks
>
>
>
Based on your responses I would look at disabling ehci_hcd -- here are a
couple of examples from my Google search:

http://www.geekdevs.com/2010/04/solved-unable-to-enumerate-usb-device-disabling-ehci_hcd/

http://uucode.com/blog/2011/01/18/solved-unable-to-enumerate-usb-device-on-port-1/

I have never tried APCUPSD on my hardware... but you might also scan
through the known issues:

http://www.apcupsd.org/manual/manual.html#known-linux-usb-issues
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