On 16.10.2014 19:08, Matej Kenda wrote:
> Hi,
> 
> I apologise for a typo.
> 
> On 16. okt. 2014, at 17:15, Matej Kenda <[email protected]> wrote:
> 
>> The problem was originaly discovered on 3.13, then I tested on 3.14, 3.16 
>> and 3.17. 
>>
>> It did work on any of these kernels. 
> 
> Correction:
> 
> It did *not work* on any of these kernels.
> 

I got one icybox from Heinz Diehl some time ago, I wasn't able to reproduce the 
problem back then, but now
with a new laptop I can see it randomly disconnecting.

However my issue is a bit different, I see several short packet errors before 
disconnect, you got
a context error.

can you add xhci debugging, it should print out the context data of the failing 
setup context command.

echo -n 'module xhci_hcd =p' > /sys/kernel/debug/dynamic_debug/control

before connecting the icybox

-Mathias
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