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Re: xsane: incoherent behaviours

From Brian <ad44@cityscape.co.uk>
Newsgroups linux.debian.user
Subject Re: xsane: incoherent behaviours
Date 2019-07-31 12:20 +0200
Message-ID <ypTSa-8q2-15@gated-at.bofh.it> (permalink)
References <ypDDI-6rk-5@gated-at.bofh.it> <ypIDn-1da-1@gated-at.bofh.it> <ypIWJ-1kY-5@gated-at.bofh.it>
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On Wed 31 Jul 2019 at 00:35:51 +0200, Pierre Frenkiel wrote:

> On Tue, 30 Jul 2019, Brian wrote:
> 
> > The outputs of 'scanimage -L' from each machine were asked for. They
> > provide information you have not given.
> > 
> > -- 
> > Brian.
> > 
>  hi brian,
>  I thought that they don't provide more information than what I wrote previously,

The outputs provide the URIs seen by scanimage (and xsane), how the
URIs have been formed and the names of the devices. All essential
information.
 
>  (on my desktop(buster) and my laptop (amd64/stretch), both devices are listed.
>  on my wife's laptop(amd64/stretch), only the laserjet)

Being listed is not sufficient; a URI also has to be correct.
 
>  but if you want them, here they are
> 
>  my desktop:
>     device `hpaio:/net/HP_LaserJet_MFP_M227-M231?ip=192.168.1.41' is a Hewlett-Packard HP_LaserJet_MFP_M227-M231 all-in-one
>    device `hpaio:/net/laserjet_mfp_m227-m231?ip=192.168.1.41&queue=false' is a Hewlett-Packard laserjet_mfp_m227-m231 all-in-one

I think that scanimage (and xsane) use the first offered URI.

Test:

 scanimage -d hpaio:/net/HP_LaserJet_MFP_M227-M231?ip=192.168.1.41 > out.dat
 scanimage -d hpaio:/net/laserjet_mfp_m227-m231?ip=192.168.1.41&queue=false > out.dat

>    device `hpaio:/net/envy_photo_7100_series?ip=192.168.1.200&queue=false' is a Hewlett-Packard envy_photo_7100_series all-in-one
> 
>  my laptop:
>    device `hpaio:/net/laserjet_mfp_m227-m231?ip=192.168.1.41&queue=false' is a Hewlett-Packard laserjet_mfp_m227-m231 all-in-one
>    device `hpaio:/net/envy_photo_7100_series?ip=192.168.1.200&queue=false' is a Hewlett-Packard envy_photo_7100_series all-in-one
> 
>  my wife's laptop:
>    device `hpaio:/net/HP_LaserJet_MFP_M227-M231?zc=NPIBDD3AA' is a Hewlett-Packard HP_LaserJet_MFP_M227-M231 all-in-one
> 
>  I would be glad if that helps you to explain what happens.
>  I specially don't understand why she doesn't see the envy.

The URIs with "queue=false" indicate that your desktop and laptop have
discovered the MFDs from their DNS-SD (Bonjour) broadcasts. Your wife's
laptop does not do such a discovery. This implies that there is some
issue with avahi-daemon on this machine. What do you get for

 avahi-browse -rt _uscan._tcp

and

 avahi-browse -rt _ipp._tcp

avahi-browse is in the avahi-utils package.

-- 
Brian.

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Thread

xsane: incoherent behaviours Pierre Frenkiel <pierre.frenkiel@gmail.com> - 2019-07-30 19:00 +0200
  Re: xsane: incoherent behaviours Brian <ad44@cityscape.co.uk> - 2019-07-31 00:20 +0200
    Re: xsane: incoherent behaviours Pierre Frenkiel <pierre.frenkiel@gmail.com> - 2019-07-31 00:40 +0200
      Re: xsane: incoherent behaviours Brian <ad44@cityscape.co.uk> - 2019-07-31 12:20 +0200
        Re: xsane: incoherent behaviours Brian <ad44@cityscape.co.uk> - 2019-07-31 13:30 +0200
          Re: xsane: incoherent behaviours Pierre Frenkiel <pierre.frenkiel@gmail.com> - 2019-07-31 14:00 +0200
            Re: xsane: incoherent behaviours Brian <ad44@cityscape.co.uk> - 2019-07-31 15:10 +0200
              Re: xsane: incoherent behaviours Pierre Frenkiel <pierre.frenkiel@gmail.com> - 2019-07-31 16:30 +0200
                Re: xsane: incoherent behaviours Brian <ad44@cityscape.co.uk> - 2019-07-31 16:50 +0200
                Re: xsane: incoherent behaviours Pierre Frenkiel <pierre.frenkiel@gmail.com> - 2019-07-31 17:40 +0200
                Re: xsane: incoherent behaviours Brian <ad44@cityscape.co.uk> - 2019-07-31 17:50 +0200
                Re: xsane: incoherent behaviours Pierre Frenkiel <pierre.frenkiel@gmail.com> - 2019-07-31 19:50 +0200
                Re: xsane: incoherent behaviours Brian <ad44@cityscape.co.uk> - 2019-07-31 20:20 +0200
                Re: xsane: incoherent behaviours Pierre Frenkiel <pierre.frenkiel@gmail.com> - 2019-07-31 20:20 +0200
                Re: xsane: incoherent behaviours Brian <ad44@cityscape.co.uk> - 2019-07-31 20:40 +0200
                Re: xsane: incoherent behaviours Pierre Frenkiel <pierre.frenkiel@gmail.com> - 2019-07-31 22:00 +0200
                Re: xsane: incoherent behaviours Brad Rogers <brad@fineby.me.uk> - 2019-07-31 22:20 +0200
                Re: xsane: incoherent behaviours Pierre Frenkiel <pierre.frenkiel@gmail.com> - 2019-08-01 08:30 +0200
                Re: xsane: incoherent behaviours Brad Rogers <brad@fineby.me.uk> - 2019-08-01 10:10 +0200
                Re: xsane: incoherent behaviours Pierre Frenkiel <pierre.frenkiel@gmail.com> - 2019-08-01 10:20 +0200
                Re: xsane: incoherent behaviours Brad Rogers <brad@fineby.me.uk> - 2019-08-01 10:30 +0200
                Re: xsane: incoherent behaviours Andrei POPESCU <andreimpopescu@gmail.com> - 2019-08-01 16:20 +0200
                Re: xsane: incoherent behaviours Brad Rogers <brad@fineby.me.uk> - 2019-08-01 17:00 +0200
                Re: xsane: incoherent behaviours Pierre Frenkiel <pierre.frenkiel@gmail.com> - 2019-08-01 17:20 +0200
                Re: xsane: incoherent behaviours Brian <ad44@cityscape.co.uk> - 2019-08-01 18:10 +0200
                Re: xsane: incoherent behaviours Brian <ad44@cityscape.co.uk> - 2019-08-01 17:10 +0200
            Re: xsane: incoherent behaviours Brian <ad44@cityscape.co.uk> - 2019-07-31 15:20 +0200
              Re: xsane: incoherent behaviours Pierre Frenkiel <pierre.frenkiel@gmail.com> - 2019-07-31 17:20 +0200
                Re: xsane: incoherent behaviours Brian <ad44@cityscape.co.uk> - 2019-07-31 18:00 +0200

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