Printing within WUR on Linux

Sat, 11 Jun 2022 16:46:11 +0200

Motivation

At Wageningen University & Research the Linux Operating System is supported on a best effort principle, meaning that it is supported as far as the knowledge of Facilities and Services Information Technology (FB-IT) reaches. FB-IT is supported by their colleagues maintaining the High Performance Computing Cluster Anunna, who have a lot of knowledge about the Linux Operating System, because it’s the Operating System used by Anunna.

On the other hand Linux users are generally users, who are very independent and know how to search for and implement solutions themselves. Being one of those Linux users within WUR myself I want to share in this post, how I have set up printing on my Linux systems to use the facilities offered at Wageningen University & Research.

Note

This post will show how to set up printing on a desk- or laptop using Linux as Operating System within WUR.

The described procedure should work on Ubuntu/Debian based Linux Operating Systems.

Warning

To be able to print on facilities (multifunctionals) at WUR the desktop or laptop needs to be within WURNET, either physically or via a VPN connection.

Download

For convenience the PostScript Printer Description (PPD) files of the printers in use at Wageningen University & Research are provided. You can save the files into the Downloads folder of your Linux desk- or laptop by right-clicking the link and selecting the option ‘Save link as…’ (IMPORTANT: DO NOT CHANGE THE FILE NAMES!):

Ricoh-IM_C4500-Postscript-Ricoh.ppd

RECOMMENDATION: Use the Postscript PPD file for the Ricoh IM C4500. On internet you can also find the PDF ppd file, but so far it does not work within WUR.

Since February 2023 the Ricoh IM C4500 is the default printer at WUR.

Printer Setup

Open the system printer configuration tool (alternatively use console command: system-config-printer in a terminal) as displayed below in .

System configuration for printers.

Click the ‘+ Add’ button to configure a new printing device and a window will open as shown in .

Configure a new printing device.

In the left column named Devices select ‘Network Printer’ > ‘Windows Printer via SAMBA’. As shown in fill the field SMB Printer with the address smb://scomp6352.wurnet.nl/WURprinter (printer queue, which handles printjobs at WUR).
Set the authentication details, as shown in . Click the ‘Forward’ button to start the search for the printer driver as displayed below in

Warning

Replace user001 with your personal WUR username and make sure to add @wurnet.nl behind it. The Password provided should be the WUR Windows password for your WUR username.

Searching for printer driver.

The searching for drivers will take a little while, but none will be found. Instead a window will be presented as shown below in to choose the proper printer driver. Use the radio button to select ‘Provide PPD file’ and select, as advised, the Ricoh-IM_C4500-Postscript-Ricoh.ppd file (see section). Next click the ‘Forward’ button to continue.

Choose the printer driver.

A window with Installable Options for the new printing device will open as shown in . Select the settings shown and, afterwards, click the ‘Forward’ button to continue:
- Option Tray: Lower Paper Trays (SELECT THE PLURAL FORM HERE!)
- Large capacity tray: Not Installed
- Internal Tray 2: Installed
- Internal Shift Tray: Not Installed
- External Tray : Not Installed
- Finisher: Finisher SR3250
- Folding Unit: Not Installed
- PostScript: PostScript Emulation

Configure installable options for the printer.

Next you will asked to describe the printer, as shown in . Fill the fields as shown in the figure or with you own information:
- Printer Name: WURprinter
- Description: WUR printer Ricoh IM C4500 Postscript
- Location: Anywhere within WUR with user’s wurcard!

Printer description.

Finish the printer setup by clicking on the ‘Apply’ button. A test print window will appear, as shown in . Select whether you want to print a test page already or press the ‘Cancel’ button to ignore.

Print test page request.

Warning

REMOVE SHARING OFF THE WURprinter!! Sharing allows other users to print on your WUR account. However, you will have to print and collect the print jobs with your WUR card. This is of course very undesirable.

To prevent this behavior, right-click the WURprinter as displayed in and remove the tick-mark in front of Shared. This sub-menu, appearing with right-clicking the WURprinters, has other nice features such as making the selected printer your default.

Resetting your WUR Password for printing

Every 4 months you need to change the password of your WUR Account for obvious safety reasons.

This also means that you need to change your WUR password in the printer settings, when you have filled your password during the printer setup (see step 2.).

The are two options:

Delete the WURprinter and set up a new printer, as described in .
Modify the /etc/cups/printers.conf file to match your changed WUR password:
1. Open a terminal (CTR+ALT+T)
2. Issue the following command to shut down the Common UNIX Printing System (CUPS daemon):
```
  sudo service cups stop
```
1. Open the /etc/cups/printers.conf file as adminstrator in a text editor, e.g.
```
  sudo xed /etc/cups/printers.conf
```
1. Modify the line:
```
  DeviceURI smb://user001%40wurnet.nl:password@scomp6352.wurnet.nl/WURprinter
```
1. In this line %40wurnet.nl represents @wurnet.nl, where the @ is encoded as hexadecimal ASCII character (see ). user001 will be displaying your own personal WUR username. The part between : and @ represents your password, in which special characters are encoded as hexadecimal ASCII characters. Modify the password part to match you new password.
  - e.g. new password: qu!ck4L!9H+2 (very strong password), needs to be provided in printers.conf as qu%21ck4L%219H%2B2
2. Save the modified /etc/cups/printers.conf file and exit the text editor
3. Restart the CUPS daemon:
```
  sudo service cups start
```

Note

Having reset your WUR account password, you should be able to print again.

CUPS issue: no color prints

Linux distributions generally use the Common Unix Printing System (CUPS) as the default printing daemon.

In some versions of CUPS 2.4.x there is a bug, which causes printers to be added default in monochrome mode. Even when you indicate that you want to print in color, the output will be monochrome. Check your CUPS version in a browser using localhost:631 as URL.

Perform the following steps to fix this problem:

Open a terminal (CTRL+ALT+T) and log in as administrator using the console command:

sudo -i

Excute the following command, where <printername> reflects the name of your printer (if you followed above, <printername> will be WURprinter as set in step 7.):

lpadmin -p <printername> -o print-color-mode-default=color

Exit out of administrator mode using the exit command.
Close the terminal, if desired, with another exit command.

Printing | Maikel P.H. Verouden, Ph.D.

Printing within WUR on Linux

Motivation

Download

Printer Setup

Resetting your WUR Password for printing

CUPS issue: no color prints