Bug#982742: cups: config of usb printer now impossible due to usblp and libusb conficting (used to work!)
On Mon 15 Feb 2021 at 19:36:29 +0100, mh wrote:
> Am Mon, 15 Feb 2021 15:12:49 +0000
> schrieb Brian Potkin <claremont102@gmail.com>:
>
> Only for curiosity:
> On systems where there is NO problem, why do I see one printer in cups
> config (network printer) resulting in two printers in the printing menu?
Possibly because one is a manual queue and one a cups-browsed queue.
https://wiki.debian.org/CUPSDriverlessPrinting#dups
Follow our wiki advice or purge cups-browsed.
> > This is the concerning part. Why do some commands like ippfind,
> > lpstat -e and avahi-browse give empty outputs on Debian unstable? Are
> > the Debian and Live ISO versions of ipp-usb the same?
>
> It is all Debian/unstable. And it does not depend on the version of
> ipp-usb ( 0.9.16-1 and 0.9.17-1 ). Both work on live-iso (from
> 2021.02, the 2020.07 version didn't ship ipp-usb ) or new installation
> (2021.02 dist-upgraded), neither work with my old installation. I know
> this for a fact because the problem persist longer than 0.9.17-1 exists.
>
> I can live without ipp-usb working on this installation. But if someone
> tells me how to investigate the flaw, I am happy to investigate, too.
I have asked for a little bit of information about lpstat in another
post. Maybe the ipp-usb logs Alex requested logs may help. Otherwise,
I am at a loss to suggest a good debugging technique.
Awaiting inspiration!
Brian.
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