hplip setup problems

Predrag Punosevac punosevac at math.arizona.edu
Thu Mar 27 13:20:31 PDT 2008

Isaac Mushinsky wrote:
> Anish Mistry (the port maintainer) has answered below. It seems that this is
> a printer defect after all then. I'll try to patch the code to fill in the
> missing serial id with some fake string, and shall report if I get the thing
> to work.
> Is the hp backend the only entry point to libusb, or should I have to patch
> libusb? e.g. cups or sane apps, can they call libusb directly, or only
> through hpaio backend? I would rather have a patch to hplip distribution
> only, because libusb correctly throws an error code for the missing serial
> id. But if some apps query the device directly, the missing serial id may be
> a problem, they will all have to all be patched separately.
I wouldn't touch HPLIP. If something is wrong report upstream. They 
should patch. No you do not have to patch any

Look at the files


usr//src/sys/dev/usb/ugen.c (I think that this one needs to be patched)



>>  It looks like there is some problem with the C42XX printers that is
>> causing the serial numbers to no be reported.  I got a similar report
>> about a HP Photosmart C4200 series a couple weeks ago.  Unfortunately
>> I'm VERY busy right now.  It will be a couple of week before I can
>> dive into the issue.  If you do happen to find a solution, please let
>> me know so I can integrate it into the port and notify others.
>>  Thanks,
>>  --
>> Anish Mistry
>> amistry at am-productions.biz
>> AM Productions http://am-productions.biz/
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