unable to enumerate USB device: APCUSBD

[spoonplug36 at comcast.net]

all this is beyond me, didn't know what I was getting into when I signed up. How do I stop getting all these emails? 




----- Original Message -----
From: "Tommy Trussell" <tommy.trussell at gmail.com> 
To: "bill" <william at techservsys.com> 
Cc: "Ubuntu user technical support, not for general discussions" <ubuntu-users at lists.ubuntu.com> 
Sent: Thursday, September 6, 2012 9:52:57 AM 
Subject: Re: unable to enumerate USB device: APCUSBD 




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: 

<blockquote>
On Sat, Sep 1, 2012 at 9:12 AM, william drescher < william at techservsys.com > wrote: 


<blockquote>
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. 

</blockquote>
it was an upgrade. 


<blockquote>




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. 
</blockquote>
good idea 


<blockquote>



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? 
</blockquote>
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 


<blockquote>



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. 


</blockquote>
thanks 




</blockquote>



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 
-- 
ubuntu-users mailing list 
ubuntu-users at lists.ubuntu.com 
Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-users 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.ubuntu.com/archives/ubuntu-users/attachments/20120906/545fc19e/attachment.html>