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From: Till Kamppeter <till.kamppeter@gmail.com>
Message-ID: <56006057.30600@gmail.com>
Date: Mon, 21 Sep 2015 16:53:59 -0300
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Subject: Re: [Printing-architecture] [cups-devel] Communication between IPP
 printer and "ipp" CUPS backend
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To: "Kennedy, Smith (Wireless Architect)" <smith.kennedy@hp.com>
Cc: Open Printing <printing-architecture@lists.linux-foundation.org>, Daniel Dressler <danieru.dressler@gmail.com>, "The CUPS developer list." <cups-devel@cups.org>

Smith, did you get my e-mail? Did you already have a look into my files?

    Till

On 09/16/2015 04:34 PM, Till Kamppeter wrote:
> On 09/15/2015 09:32 PM, Kennedy, Smith (Wireless Architect) wrote:
>> Hi Till,
>>
>> Sorry for not replying earlier. Would you have any USB traces from
>> Wireshark or a Beagle protocol analyzer, or logs, and/or the
>> corresponding document files, so that we could try to repro it
>> internally?
>>
>> Smith
>
> As the problem always occurs after 4 or 5 successful jobs (all the jobs
> being the same one) after turning on the printer, it seems that some
> data is accumulating in some buffer of the printer which runs full after
> a certain amount of activity making the printer blocking.
>
> Perhaps it is data which the printer tries to send to the client without
> being an answer to a request from the client but sent spontaneously by
> the printer. ippusbxd does not pick up such data from the printer as it
> waits for data from the printer only as an answer to a request which it
> has sent.
>
>     Till
>
>