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SubjectRe: USB 2.0 (EHCI) keeps crapping out (3.2.29)


On 12/24/2012 11:10 PM, Rob Landley wrote:
> On 12/24/2012 09:02:11 PM, Logan Rathbone wrote:
>> *** NOTE: Kindly CC me directly if you reply to list since I'm not an
>> LKML subscriber. ***
>>
>> Running vanilla 3.2.29 (Slackware 14.0). I also had this issue on
>> 2.6.37.6 and *possibly* 2.6.33.x, but I don't recall.
>>
>> Every now and again (could be every few days, could take a couple of
>> weeks...
>> depends.) USB 2.0 stops working. My scanner as well as certain
>> mass-storage
>> devices that are USB-2.0 compatible fail to function all of a sudden.
>>
>> With the said mass storage devices, I get lots of errors like this in
>> my logs:
>>
>> hub 1-0:1.0: unable to enumerate USB device on port 3
>
> What is the _first_ error that shows up in dmesg when the failure occurs?

I *think* this is the first error that appears:

usb 1-3: USB disconnect, device number 3
sd 5:0:0:0: Device offlined - not ready after error recovery

That second message is sometimes:

usblp0: removed

But honestly I can't recall if my USB 2.0 printer stopped working at
that point in time. The effect of the crap-out is mainly noticeable on
my mass storage devices since I can't mount them (the device nodes do
not get created by udev until I rmmod & modprobe ehci_hcd again or reboot).

I also see stuff like this scattered throughout (hard to tell if it's
one of the first or last errors that pops up though... I think it's the
last. It usually pops up after a whole whack of the "unable to
enumerate" errors:

ehci_hcd 0000:00:10.3: force halt; handshake f8044014 0000c000 00000000
-> -110


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