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Re: cups on wheezy problem

On Tue, 09 Aug 2011 14:13:08 -0400, Wayne Topa wrote:

> Wheezy
> Aug  9 11:26:08 dj kernel: [  551.816184] usb 3-1: usbfs: interface 0
> claimed by usblp while 'usb' sets config #1

And "ls -l /dev/usblp1" returns...?
> Note: Bug#545288: CUPS 1.4.0-4 doesn't find  USB-printer  Date: Sun, 6
> Sep 2009 12:39:46 +0200
> And is the same as what I get in 2011????

Maybe not the same. It's a very old bug, arked as solved since 2009.
> Cups interface Printer Tab
> 6P  HP LaserJet 6P      HP LaserJet 6P Foomatic/ljet4   Paused -
> "/usr/lib/cups/backend/usb failed"

Maybe because the backend has changed and is no more under "/usr/lib/cups/

> Draft   Draft HP6P      HP LaserJet 6P - CUPS+Gutenprint v5.2.7
> Processing - "Waiting for printer to become available..."
> [VT3 root@dj-WHEEZY]
> ~# dpkg -S /usr/lib/cups/backend/usb
> dpkg-query: no path found matching pattern /usr/lib/cups/backend/usb.

That explains why CUPS fails.

> [VT3 root@dj-WHEEZY]
> ~# dpkg -S /usr/lib/cups/backend/
> foomatic-filters, cups, cups-pdf: /usr/lib/cups/backend

And "ls -l /usr/lib/cups/backend/" shows what available backends?

> [VT3 root@dj-WHEEZY] **** This differs from the stable cups ~# lpinfo -v
> network beh
> file cups-pdf:/
> direct scsi
> network http
> network socket
> network lpd
> network ipp
>               ***** No USB  interface???

Nope, because it seems that usb is not a known interface/driver for your 

>> Have you tried to set the printer from CUPS web interface?
> As shown above, yes.  I still can't rule out udevd OR Cups as the
> problem.
> Why would no one else be having this problem?  Make no sense to me.

I would review the current open bugs for cups:


It seems there are some regarding USB detection issues and they look 
recent :-?

cups can not detect my usb printer

usbfs: process ... (usb) did not claim interface 1 before use

cups: USB printer conflict with usb-storage (bug #546558 again?)
> Thanks again for being my sounding board.  :-)




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