Linux sane network scanner

SANE (Scanner Access Now Easy) provides a library and a command-line tool to use scanners under GNU/Linux.

Check if your scanner supports eSCL or WSD; chances are good if your device is on this Internet Printing Protocoll — IPP list of devices that support eSCL. If your device has eSCL/WSD support, modern «driverless» scanning is recommended.

Installation

Install the sane-airscan package if the scanner is known to work in driverless mode. If your scanner is using USB connection, make sure to also install the ipp-usb package and start/enable ipp-usb.service to allow using IPP protocol over USB connection.

If not, see [1] to check if SANE supports your scanner using a classic driver.

Install the sane package to use old driver-based scanning.

Verification

Now you can try to see if sane recognizes your scanner.

If that fails, run the command again as root to check for permission problems. If that fails as well, check that your scanner is plugged into the computer. You also might have to unplug/plug your scanner for /usr/lib/udev/rules.d/65-sane.rules to recognize your scanner.

Now you can see if it actually works

If the scanning fails with the message scanimage: sane_start: Invalid argument you may need to specify the device.

Then you would need to run

Sane provides many special backend options for numerous scanner types. To see what these are for your device:

Installing a scanner driver

Most scanners should work out of the box. If yours does not, see SANE/Scanner-specific problems for installation instructions.

Firmware

Firmwares usually have the .bin extension.

Firstly you need to put the firmware someplace safe, it is recommended to put it in a subdirectory of /usr/share/sane/ .

Then you need to tell sane where the firmware is:

Find the name of the backend for your scanner from the sane supported devices list.
Open the file /etc/sane.d/backend-name.conf .
Make sure the firmware entry is uncommented and let the file-path point to where you put the firmware file for your scanner. Be sure that members of the group scanner can access the /etc/sane.d/backend-name.conf file.

If the backend of your scanner is not part of the sane package (such as hpaio.conf which is part of hplip ), you need to uncomment the relevant entry in /etc/sane.d/dll.d or in /etc/sane.d/dll.conf .

Fujitsu fi series

For some of the Fujitsu fi series document scanners, the pfufs AUR proprietary driver offers advanced functionality over the already mature SANE default driver, such as control of an optional imprinter for stamping scanned documents or requesting accurate status of the consumables from the host.

Install a frontend

Many frontends exist for SANE, a non-exhaustive list of which can be found on the sane-project website.

Simple Scan — Simplified GUI that is intended to be easier to use and better integrated into the GNOME desktop than XSane. It was initially written for Ubuntu and is maintained by Robert Ancell of Canonical Ltd. for GNU/Linux.

https://gitlab.gnome.org/GNOME/simple-scan || simple-scan

Skanlite — Simple image scanning application that does nothing more than scan and save images, based on the KSane backend.

https://www.kde.org/applications/graphics/skanlite || skanlite

XSane — Full-featured GTK-based frontend looking a bit old but providing extended functionalities.

http://www.xsane.org/ || xsane

Some OCR software are able to scan images using SANE: gImageReader, gscan2pdf, Linux-Intelligent-Ocr-Solution, OCRFeeder, Paperwork.

The factual accuracy of this article or section is disputed.

Using a frontend does not mean you do not have to apply some tricks. This is especially true with devices configured via mDNS. For example, skanlite needs to have additional info specified on the command line in order to detect a network scanner properly as it cannot handle mDNS. Here is an example with an HP Officejet Pro L7590: skanlite —device «hpaio:/net/Officejet_Pro_L7500?ip=192.168.0.17» .

Network scanning

Network attached scanners

Many modern scanners will immediately work over the network as long as you have sane-airscan installed.

Scanning over the network with Canon PIXMA or imageCLASS all-in-one printer/scanners

Find out your printer/scanner’s IP address, and add it on a new line to /etc/sane.d/pixma.conf in the format bjnp://10.0.0.20 . For imageCLASS printers you may need to use the format mfnp://10.0.0.20 instead.

Sane should now find your device. For more details refer to sane-pixma(5) .

Alternatively, scangearmp2 AUR can be used for some Canon PIXMA all-in-one printer/scanners which are not detected over the network.

Scanning over the network with EPSON WorkForce printer/scanners

Edit the configuration file /etc/utsushi/utsushi.conf . Find the [devices] section and edit the template for dev2 . Replace the IP address accordingly. You can find the IP address on your printer screen. For example,

Meanwhile, comment out epson2 in /etc/sane.d/dll.conf as it conflicts with ImageScan.

Once this is done you can use any SANE frontend to access this scanner.

You can share your scanner with other hosts on your network who use sane, xsane or xsane-enabled GIMP. To set up the server, first indicate which hosts on your network are allowed access.

Change the /etc/sane.d/saned.conf file to your liking, for example:

If you use iptables, insert the nf_conntrack_sane module to let the firewall track saned connections.

Conntrack helper seems to be disabled by default.[2] You can activate it with

To configure this permanently, set the nf_conntrack_helper=1 option for the nf_conntrack module, see Kernel module#Using files in /etc/modprobe.d/.

Now start/enable saned.socket . Your scanner is now available over the network. For more information, see saned(8) .

Accessing your scanner from a remote workstation

You can access your network-enabled scanner from a remote Arch Linux workstation.

First, specify the server’s host name or IP address in the /etc/sane.d/net.conf file:

Now test your workstation’s connection:

The network scanner should now also show up in any front-end.

Windows clients

Since the Windows port of SANE seems to be unsupported, outdated and difficult to get, you can try SANEWinDS or SaneTwain (old).

Troubleshooting

Invalid argument

If you get an «Invalid argument» error with xsane or another sane front-end, this could be caused by one of the following reasons:

Missing firmware file

No firmware file was provided for the used scanner (see #Firmware for details).

Wrong firmware file permissions

The permissions for the used firmware file are wrong. Correct them using

Multiple backends claim scanner

It may happen, that multiple backends support (or pretend to support) your scanner, and sane chooses one that does not do after all (the scanner will not be displayed by scanimage -L then). This has happened with older Epson scanners and the epson2 resp. epson backends. In this case, the solution is to comment out the unwanted backend in /etc/sane.d/dll.conf . In the Epson case, that would be to change

This article or section is out of date.

It may also be possible that the independent iscan [broken link: package not found] epkowa backend interferes with your snapscan backend (epson scanners). You may get this error right after using the scanimage -L command. Starting the scanner app (like xsane ) twice can also solve the problem. Otherwise check your /etc/sane.d/epkowa.conf for wrong configurations or remove the iscan [broken link: package not found] package.

Communication via xHCI not working (older scanner models)

Some older scanner models do not work when connected via an USB3 port. If you experience this issue, try setting the SANE_USB_WORKAROUND=1 environment variable before starting your frontend.[4][5]

If that does not work, try one of the following workarounds:

Use an USB2 port instead of an USB3 port, if available.
Disable xHCI via BIOS/EFI. eHCI will consequently be used and communication with the scanner will work. On the downside, USB3 speed can not be reached on any port.
On (some) intel chipsets the setpci command can be used to route specific usb ports to either the xHCI or the eHCI controller. See here and here (scroll down to where it says «setpci») for further information. With this it is possible to toggle single USB ports with a simple shell script.
Connect the scanner over the network instead if it is supported.

Firewall

When network scanning scanner hangs, then invalid argument error occured.

saned uses data port range, so you must enable connections to 6566/tcp and data_portrange from /etc/sane.d/saned.conf or use conntrack firewall module for sane to enable data ports as described above.

Slow startup

If you encounter slow startup issue (e.g. xsane or scanimage -L does not return results nearly instantly), one of the drivers you do not use may be the culprit.

You can resolve this by editing /etc/sane.d/dll.conf and commenting out the scanner drivers you do not use. You can use scanimage -L to determine which drivers you need:

The parts between the ` and the : in the output indicate the driver for the device. For example, if only want to use the Brother scanner and not the webcam or the generic scanner driver, you can comment out everything but the brother4 driver in /etc/sane.d/dll.conf .

Device busy

The factual accuracy of this article or section is disputed.

If your USB device is listed with scanimage -L but launching the test scanimage pixma:04A9173E_11DAD1 —format=tiff —output-file test.tiff always return the ‘Device busy’ error, you might try to add your username to the scanner group usermod -a -G scanner yourusername then blacklist the usblp kernel module by writing blacklist usblp in /etc/modprobe.d/no-usblp.conf (it prevents usblp from loading to support scanning, not needed by xsane and related tools, might also conflict with CUPS). Reboot to finish. [6]

In addition to this, some Cannon printers return «device busy» if the scan mode is set to «Computer». Setting this to the «Remote Scanner» mode should fix the issue.[7]

Permission problem

With systemd, the scanner and lp groups are deprecated. No need to add your user to those groups. See Users and groups#Pre-systemd groups for detail.

You can also try to change permissions of usb device but this is not recommended, a better solution is to fix the Udev rules so that your scanner is recognized.

First check connected usb devices with lsusb :

In our example we see the scanner: Bus 001 Device 006: ID 03f0:2504 Hewlett-Packard . Here 03f0 is the vendorID and 2504 is the productID.

Alternatively, running sane-find-scanner with root permission will also give you the same vendorID and productID.

Now open /usr/lib/udev/rules.d/49-sane.rules and see if there is there is a line with the vendorID and productID of your scanner. If there is not any, create the new file /etc/udev/rules.d/49-sane-missing-scanner.rules , with the following contents:

Save the file, plug out and back in your scanner and the file permissions should be now correct.

The factual accuracy of this article or section is disputed.

Another tip, is that you can add your device (scanner) in backend file:

Add usb 0x03f0 0x2504 to /etc/sane.d/hp4200.conf so it looks like this:

Parallel port scanners

All devices attached to a parallel port are assumed to be printers, and are given a lp group. Either create a udev rule to mark the relevant parallel port as libsane_matched , or add your user to the lp user group. CUPS also uses the lp group for read-only access to configuration files, so there are potential security implications to adding users to the lp group — see CUPS#Connection interfaces for more information.

avahi-daemon is not mandatory

This article or section needs language, wiki syntax or style improvements. See Help:Style for reference.

Some scanner applications may require you to start the avahi-daemon upon startup. This is actually the cause of SANE. If for some reason you do not want to enable the avahi-daemon service because you use a wired scanner or do not need it because your scanner’s driver supports networking already on setup, then comment out the net backend in the SANE configuration:

Источник

Ubuntu Documentation

SANE — Scanner Access Now Easy

Introduction

SANE (Scanner Access Now Easy) is the linux way of scanning. sane supports a great many scanners, and the community around SANE adds support for more scanners all the time. By and large, most supported scanners are plug and play simple (plug them in and your ready to scan). However, some scanners will require manual installation (see the sane Troubleshooting guide for help with manual installation).

About this tutorial

This tutorial will walk you through the basic set up of sane with plug and play scanners.

Assumptions

We make the following assumptions in this tutorial (you will need to adjust these to fit your situation)

This set up assumes that we are on a small home or office network and are behind a firewall.
Our LAN is an IP4 network on subnet 192.168.0.0/24 (192.168.0.0 — 192.168.0.255)
Our Ubuntu box is 192.168.0.23
Our USB scanner is located at libusb:001:003
Our SCSI scanner is at /dev/sg1
Our network scanner is at 192.168.0.15
Our scanner uses the example backend (example-backend)

Setting up SANE

Step 1: Installing sane

Sane should be installed as a base package in Ubuntu 11.04 and later. You can run the following command to install it (if it’s already installed, it will do nothing):

This will also install the xsane front end. Note that some scanners will require other packages to be installed. Those are covered in the sane Troubleshooting guide.

Step 2: Test your scanner

Run following command to test your scanner:

You should see a dialog for scanning from your scanner. If SANE says that it can’t find the scanner, you will need to do a manual installation.

Manual Scanner Installation

Most of the time, the back-end for your scanner will be enabled by default. For some scanners, you will need to enable it manually. This usually involves enabling the back-end, and then adding your scanner to it.

For detailed instructions on manual installation, see the Ubuntu SANE Troubleshooting guide.

Installing Network Scanners

Many network scanners work with sane in one of two ways. The scanner can have its own sane server, or it can be supported by a backend.

Scanners with AirScan Support

Most modern scanners come with support for either Apple AirScan / AirPrint scanning (the official protocol name is «eSCL») OR Microsoft WSD, aka «Web Services for Devices».

These are both «driverless» scanning protocols and SANE supports both of these protocols with its sane-escl (eSCL only)and AirScan (eSCL and WSD) backends.

Both backends support network and USB scanners.

Scanners with their own SANE servers

Scanners with their own SANE server, as well as scanners connected to a computer running the saned service can be easily added to other computers on the network by enabling the NET backend and adding the servers IP address in the net.conf file.

1. To enable the net backend, edit the file /etc/sane.d/dll.conf by running the following command:

Within that file, you need to uncomment the NET backend. In our case, change the line that reads

2. We need to add our server or servers to the /etc/sane.d/net.conf. You can edit that file as root using this command:

3. Add your SANED server address as an IP4, IP6, hosts or DNS resolvable name

Save your file and close.

Scanners with SANE backends

SANE Backends are available for a number of network scanners. In general, all these need is to specify the protocol, address and port of your server.

1. Our example backend configuration file is /etc/sane.d/example.conf. You can edit that file as root using this command:

3. Find the line that reads:

and after it add the protocol, address and port of your network server. In our case, its

4. After you have added that line, save the file and close gedit.

SANE allows you to easily share scanners across a network. To set up the sharing of your scanner using saned, see [https://help.ubuntu.com/community/sane.d%20tutorial]

Third Party Drivers

Many of the most popular scanners require the installation of third-party drivers.

Brother Scanners

Brother offers proprietary SANE drivers for its family of network scanners and multi-function devices.

To install, visit [http://support.brother.com/g/s/id/linux/en/download_scn.html] and download the proper driver for your scanner (brscan, brscan2, brscan3 or brscan4) and your computer (32 or 64 bit) to your desktop. NOTE: You need the 64 bit .deb version!

Run the following command to install the driver you just downloaded (note: the example below is for the brscan2 package. You will have to change the file name to match what you downloaded)

After you have installed the scanner driver, you need to run the Brother SANE Configuration tool. When you run that tool, you need to append the device name (what you want to call it), the model number and the ip address of the scanner. In the example below, we are using the «brsaneconfig2» tool, we calling the scanner «MyScanner», the model we are installing is the MFC-660CN and the IP address is 192.168.0.15.

NOTE: One issue that confuses a lot of users is the difference between brscan, brscan2, brscan3, brscan4 and brscan5. Each of these tools supports a different set of scanners, and you need to download the appropriate package for your scanner. Because it is possible to install many different scanners, you need to run the proper version of the brsaneconfig tool. If your scanner is supported by the brscan3 tool, you will need to run the brsaneconfig3 tool to configure it.

NOTE: Many older Brother Scanners (brscan, brscan2, brscan3) will need some manual configuration. See the Ubuntu SANE Troubleshooting guide for specific instructions on troubleshooting these scanners using the symlink and udev rules.

HP Scanners

The majority of HP scanners are supported by the hplip project. Setting up an HP scanner can be done using the following command:

This wizard will set up your scanner for use with SANE.

Samsung Scanners

Samsung scanner users are advised to install drivers via the The Samsung Unified Linux Driver Repository. See [http://www.bchemnet.com/suldr/index.html] for information on the SULDR project.

sane (последним исправлял пользователь 5g3-steven-7tv 2020-10-28 17:20:13)

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Источник

Linux sane network scanner