[sane-devel] scanimage -L does not list net device, yet scanning is possible

Olaf Meeuwissen paddy-hack at member.fsf.org
Sun Nov 27 06:42:52 UTC 2016

Hi Jan,

Jan Beinersorf writes:

> [...]
> The only thing that is not working is detecting the scanner using
> scanimage -L.

The manual page says:

  The -L or --list-devices option requests a (partial) list of devices
  that are available.  The list is not complete since some devices may
  be available, but are not listed in any of the configuration files
  (which are typically stored in directory /etc/sane.d).  This is
  particularly the case when accessing scanners through the network.  If
  a device is not listed in a configuration file, the only way to access
  it is by its full device name.  You may need to consult your system
  administrator to find out the names of such devices.

> Does anyone have an idea what's going on here?

The scanimage source code only queries for local scanners and does not
provide a way to make it query for non-local scanners.  The net backend
always returns an empty list when queried for local scanners.

Hope this helps,
Olaf Meeuwissen, LPIC-2            FSF Associate Member since 2004-01-27
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