Re: USB stops working if a malfunctioning USB device is connected

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On 7 December 2016 at 01:09, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:
> On Tue, 6 Dec 2016, PrasannaKumar Muralidharan wrote:
>
>> > The issue did not appear for a day with 4.9-rc5. Will check for a
>> > couple more days and get back.
>>
>> I have been running 4.9-rc5 for quite some time. Did not observe the
>> crash so far but some times my USB port stops recognising the device.
>> After rebooting the system the USB port starts working.
>>
>> No OOPS or message related to this appeared in dmesg output. Is there
>> a way to collect more info?
>
> You can turn on dynamic debugging for USB:
>
>         echo 'module usbcore =p' >/sys/kernel/debug/dynamic_debug/control
>
> Alan Stern
>

Okay. Let me try to get more info and get back.

Thanks,
PrasannaKumar
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