Re: Getting spammed by "hub 2-1:1.0: unable to enumerate USB device on port 6"

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Hi Francis,

On Fri 24-06-11 17:14:07, Francis Turkey wrote:
> suddenly out of the blue [1] I started getting these messages in the kernel log:
> hub 2-1:1.0: unable to enumerate USB device on port 6

We've also seen that with 2.6.32.41.  That's a result of failed device
enumeration on that port.

> They seem harmless but they still skyrocket my system load to 1.6 from 0.1.
> I tried every solution I could find on wacky forums on the internet, but none worked,
> except of course from rmmoding ehci_hcd (although, I heavily rely on USB).

What HC driver modules are loaded in your kernel - just ehci_hcd or ehci_hcd
and uhci_hcd or ohci_hcd.

> I patched my kernel to remove that message, but the load still goes to 1.6
> when ehci_hcd is loaded, which makes me believe that something is not going
> really well.

1.6?  How many CPU cores do you have and which processes make it busy?  I'd
guess it's khubd ans possibly some other ones.

> I pasted my 'lsusb -v' to pastebin.com so as to not flood this threat:
> http://pastebin.com/q6mQghBp
> 
> Please, any help would be really appreciated.
> Thank you!
> 
> 
> [1]: Out of the blue means that I just rebooted and it started happening. I then 
> 
>       tried all the kernels I was using for the past year and the message
>       started appearing in all of them as well. I vaguely remember having
>       this exact message some months ago in the same machine and I think it
>       suddenly just stopped.

Yes, it seems to be intermittent.

>       I'm having this problem now for 3-4 days and it gets really irritating
>       since it stresses my computer too much.

Libor
-- 
Libor Pechacek
SUSE L3 Team, Prague
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