Re: CUPS mailing list (was: Re: bullseye fusses)
On Sat, Dec 11, 2021 at 09:12:49PM -0800, Gene Heskett wrote:
> On Sat, 11 Dec, 2021 at 10:32 PM, Andy Smith <andy@strugglers.net> wrote:
>
>
> To: debian-user@lists.debian.org
> On Sun, Dec 12, 2021 at 02:56:12AM +0000, Andy Smith wrote:
> > Is that the list that you are talking about?
>
> For those playing along at home, Gene directly sent me a rambling
> HTML reply which did confirm that cups@cups.org<mailto:cups@cups.org> is the list he is
> talking about, but only went on to say that he has attempted to
> subscribe to it again and has not yet received an error.
>
> So it seems most likely that this is user error as opposed to the
> evil machinations of Apple corp, but we will probably never know
> because as usual Gene does not provide any details as to what errors
> he has seen up until now.
>
> > I think you will do better if you did the usual thing of
> > explaining:
> >
> > - exactly what you did
> > - what exactly happened including exact output of any error message
> > given (not your recollection of what may have happened)
> > - what exactly you expected to happen instead
>
[Bunch of mail configuration stuff snipped - as for printing]
Gene,
Is this Debian 10 or Debian 11?
In another thread, I cut and pasted this from the Debian 11 release notes
ref CUPS
2.2.2. Driverless scanning and printing
Both printing with CUPS and scanning with SANE are increasingly likely to be
possible without the need for any driver (often non-free) specific to the
model of the hardware, especially in the case of devices marketed in the past
five years or so.
2.2.2.1. CUPS and driverless printing
Modern printers connected by ethernet or wireless can already use driverless
printing, implemented via CUPS and cups-filters, as was described in the
Release Notes for buster. Debian 11 “bullseye” brings the new package
ipp-usb, which is recommended by cups-daemon and uses the vendor-neutral
IPP-over-USB protocol supported by many modern printers. This allows a USB
device to be treated as a network device, extending driverless printing to
include USB-connected printers. The specifics are outlined on the wiki.
The systemd service file included in the ipp-usb package starts the ipp-usb
daemon when a USB-connected printer is plugged in, thus making it available
to print to. By default cups-browsed should configure it automatically, or
it can be manually set up with a local driverless print queue.
2.2.2.2. SANE and driverless scanning
The official SANE driverless backend is provided by sane-escl in libsane1. An
independently developed driverless backend is sane-airscan. Both backends
understand the eSCL protocol but sane-airscan can also use the WSD protocol.
Users should consider having both backends on their systems.
eSCL and WSD are network protocols. Consequently they will operate over a USB
connection if the device is an IPP-over-USB device (see above). Note that
libsane1 has ipp-usb as a recommended package. This leads to a suitable
device being automatically set up to use a driverless backend driver when
it is connected to a USB port.
-
Can we sort one problem at a time?
All the very best, as ever,
Andy Cater
Reply to: