Bug#982742: cups: config of usb printer now impossible due to usblp and libusb conficting (used to work!)

[Brian Potkin <claremont102@gmail.com>]

On Sun 14 Feb 2021 at 14:47:42 +0100, mh wrote:

> Am Sun, 14 Feb 2021 13:06:09 +0000
> schrieb Brian Potkin <claremont102@gmail.com>:
> 
> > On Sun 14 Feb 2021 at 12:56:11 +0100, mh wrote:
> > 
> > > Am Sun, 14 Feb 2021 11:21:45 +0000
> > > schrieb Brian Potkin <claremont102@gmail.com>:
> > >   
> > > > Michael, don't forget to mail the bug; I sent the last one there
> > > > for you.  
> > > 
> > > Thanks. I wondered whether I should respond to your mail address.
> > > Now I did CC 982742@bugs.debian.org if that's what you suggested.  
> > 
> > That's better. Thanks.
> >  
> > > > 
> > > > "bInterfaceProtocol      4" indicates that the printer understands
> > > > IPP=over-USB. Now give
> > > > 
> > > >   systemctl list-units "ipp-usb*" | grep service  
> > > 
> > > # systemctl list-units "ipp-usb*" | grep service
> > > ~#  
> > 
> > An empty output is unexpected. What happens with
> > 
> >   systemctl start ipp-usb
> > 
> > and
> > 
> >   systemctl status ipp-usb
> > 
> > with the printer connected 
> 
> # systemctl start ipp-usb
> ~#
> 
> # systemctl status ipp-usb
> ● ipp-usb.service - Daemon for IPP over USB printer support
>      Loaded: loaded (/lib/systemd/system/ipp-usb.service; static)
>      Active: active (running) since Sun 2021-02-14 14:01:53 CET; 32min
> ago Docs: man:ipp-usb(8)
>    Main PID: 854 (ipp-usb)
>       Tasks: 10 (limit: 4634)
>      Memory: 7.9M
>         CPU: 52ms
>      CGroup: /system.slice/ipp-usb.service
>              └─854 /sbin/ipp-usb udev
> 
> Feb 14 14:01:53 neutower systemd[1]: Started Daemon for IPP over USB
> printer support

That's exactly what should happen. cups-browsed should now install a
queue. Anything from 'lpstat -t' now? How about 'lpstat -l -e' and
'avahi-browse -rt _ipp._tcp'?

Regards,

Brian.