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#rev 2020-09-11 stroth
#rev 2018-10-30 stroth
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= Linux = = Linux printing =
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Printing on the Linux-based Workstations has changed a lot from Debian Wheezy to Debian Jessie. At the moment we support both of the printing systems available at the ETH. The old VPP printing system with mostly Xerox printers as well as the new PIA/Nashuatec printers connected via samba. In the future, the VPP system will go end of life and the old printers will be replaced with new Nashuatec printers. == General information ==
 * The printing system at ETH is known as "PIA", __P__rint service of __I__nformatikdienste for __A__ll
 * [[https://printing.sp.ethz.ch|General information about PIA]] provided by Informatikdienste (ID)
 * [[https://print.ethz.ch/|Overview of personal print jobs and costs]]
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As we did a complete rework of the printing accessibility, there are some significant changes for the users. The main difference is that every client runs it's own CUPS (printserver) instead of connecting to the former central printserver (ipp2vpp.ee.ethz.ch). As a consequence of that, you can now print out of any application which supports CUPS printing. == Available print servers ==
There are different print servers providing print queues for different geographical locations:
 * [[https://pia01.d.ethz.ch/printers/ipp_0001.asp?startid=1&endid=9999|pia01.ethz.ch]] for ETH center buildings
 * [[https://pia02.d.ethz.ch/printers/ipp_0001.asp?startid=1&endid=9999|pia02.ethz.ch]] for ETH Hönggerberg
Stored credentials (see below) will contain the name of the print server.
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Although you can't see any difference in the list of printers between the VPP and the PIA printers (except of the name: PIA printers start with "p-"), there are some substantial differences in the background which have to be concerned. More about that in the system-specific paragraphs below. == Available printers ==
 * Printers are named and labelled following the scheme "p-building-floor-room", as for example "p-etf-d-104"
 * The pull printing queue is named "card-ethz" (Nashuatec printers) or "card-hp" for the newer HP printers. It allows releasing a print job on any printer fitted with a card reader by holding a ETH card to the sensor labelled "ETH CARD".
 * Printers in buildings ETF, ETL, ETZ and HIA are available from Linux clients managed by ISG D-ITET
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== VPP ==
On one hand, there are is the old VPP printing system which already worked on Debian Wheezy machines. With the new system, it is possible to print on VPP printers using the printing dialogs of any applications which supports the CUPS printing now. For the reason of clarity we installed only the printers in the ET and the HIA area. If there is a need for more printers, please contact ISG.EE <support@ee.ethz.ch> with an explanation why it's needed. The website http://www.vppspy.ethz.ch/tools/vpplist.php provides a list of all currently available printers including printing logs for the last days.		 <<Anchor(authenticated-printing)>>,
== Storing credentials for authenticated printing ==
In order to track usage and manage costs every print job needs to be submitted with personal ETH network credentials. The following process describes storing your credentials for automatic submission with every print job.
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== PIA ==
On the other hand, there is the new PIA printing system. General information about the system are available here: [[https://www1.ethz.ch/id/services/list/print_service/index]]. With the upgrade of our managed clients to Debian Jessie, all the PIA printers of the ET and HIA area are installed by default. They are listed at the end of the printer list with a "p-" prefix. Additionally the PIA system offers a PULL-queue named "card-ethz". Print-jobs that were sent to this queue can be printed at any PIA printer that provides a card reader. You will need your legi to release the print jobs.
As these PIA printers require an authentication every time a print-job is sent, we have implemented a password caching solution that uses the gnome keyring. The keyring (as long as your keyring has the same password as your NETHZ account) will be unlocked at login and allows you to print without any further authentication in your everyday life. This solution requires some initial steps to work properly. Please consult the following instructions to do so. 		 1. Open a console
 1. Enter `system-config-printer` to open "Print Settings"
 1. Double-click the printer '''card-ethz''' or '''card-hp'''<<BR>> {{attachment:01_card-ethz.png}}
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=== Initial steps to save the password for PIA printers ===  1. In the appearing window "Printer Properties" press the button '''Print Test Page'''<<BR>>{{attachment:02_print-test-page.png}}
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In theory, it's possible to save the password at any time a print-job is sent from any application. A password dialog appears and with the correct credentials, the password should be saved without a problem. If you do so, there is one problem: By saving the password with an application, the password will only be saved for the specific printer you sent the job to. If you want to save the password for all printers, there is a simple initial task flow to do so:  1. Enter your username including the domain '''d\'''
 1. Tick the check box labelled '''Remember password''' to store your credentials
 1. Confirm the dialog by pressing the button '''OK'''<<BR>>In case of wrong credentials the dialog will simply reappear without warning about the fact<<BR>>{{attachment:03_authentication_required.png}}
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 1. Open a console.
 1. type `system-config-printer` to open the printing management.
 1. Double-click on the printer '''card-ethz'''.
 
 {{attachment:system-config-printer_1.png}}
 1. Press '''Print Test Page'''
 
 {{attachment:system-config-printer_2.png}}
 1. Enter your NETHZ credentials as described. The domain '''d\''' before the username and the tick in the check box are necessary. This dialog doesn't throw any errors if you enter the wrong credentials. It will simply pop up again.
 
 {{attachment:system-config-printer_3_1.png}}
 1. Press '''Print Test Page''' again. If the dialog didn't pop up again, you have successfully saved the password in the keyring.
 1. To be sure, you can verify the process with the instructions in the chapter '''Verifying the Keyring'''.		  1. Press '''Print Test Page''' again, now the dialog asking for credentials should not reappear
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=== Verifying the Keyring === == Verifying stored credentials ==
 1. Open a console
 1. Enter `seahorse` to open "Passwords and Keys"
 1. Verify any entry similar to the one below in your keyring named "Login"<<BR>>{{attachment:04_verify_password.png}}
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 1. At first, open a terminal and type `seahorse`. That's a tool to get an overview of your saved passwords. If there is an entry like on the screen shot, your password has been saved successfully.
 
 {{attachment:seahorse.png}}
 1. Next, open firefox and try to print on either the card-ethz PULL-queue or any of the pia printers ( p-et* ). The print-job should be sent without any further dialog popping up.
 1. To finish the verification, head to a PIA/Nashuatec printer in your area and hold your ETH card/legi on the marked area on the printer. The previously send test pages should now appear on the display. Pressing the '''Print All''' button will release the jobs.		 == Setting the default printer ==
 1. Open a console
 1. Enter `system-config-printer` to open "Print Settings"
 1. Find the desired printer by entering parts of its name into the '''Filter''' field
 1. Double-click the printer you want to set as the default printer<<BR>>{{attachment:05_find-default-printer.png}}
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If all these steps went well, your password has been saved successfully and your printing system is installed correctly. If any of these steps fails, try the '''Initial steps to save the password for PIA printers''' or contact ISG.EE Support at <support@ee.ethz.ch>.  1. Close the appearing "Printer Properties" window by pressing the button '''Cancel'''<<BR>>{{attachment:06_activate-for-default.png}}<<BR>>Now the "Set As Default" menu entry used below will be available
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=== How to set a default printer ===  1. Right-click the printer you want to set as the default printer
 1. Select the menu entry '''Set As Default'''<<BR>>{{attachment:07_set-as-default.png}}
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 1. Open a console.
 1. type `system-config-printer` to open the printing management.
 1. Double-click on the printer you want to set as the default printer.		  1. Check '''Set as my personal printer''' and confirm by pressing '''Ok'''<<BR>>{{attachment:08_set-default-printer.png}}
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 {{attachment:system-config-printer_default_1.png}}
 1. Next, you have to close the window that opened again. These two steps ( 3 + 4 ) are necessary, to unlock the "Set As Default" button used in the next steps.		  1. The default printer is now marked with a heart<<BR>>{{attachment:09_have-default-set.png}}
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 {{attachment:system-config-printer_default_2.png}}
 1. Right-click on the printer you want to set as the default printer and press the button "Set As Default".
 
 {{attachment:system-config-printer_default_3.png}}
 1. Check "Set as my personal printer" and confirm your selection by pressing "Ok".		 == Troubleshooting ==
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 {{attachment:system-config-printer_default_4.png}}
 1. At last, the printer you selected as default printer is now marked with a heart.		 === I've printed something, but it didn't come out of the printer. ===
Check your local printer queue. Start `system-config-printer` in your console and right-click -> ''View Print Queue'' on the printer/queue you've selected previously. If your job's hanging here, try right-click -> ''Release''. If the desired jobs isn't listed in the queue, check [[https://www.print.ethz.ch|Papercut]] for errors regarding your print-job. If you can't find any problem, please contact <<MailTo(support AT ee DOT ethzDOT ch, "ISG D-ITET Support")>>.
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 {{attachment:system-config-printer_default_5.png}} === After sending the print job, the printer flashes a red LED and says: Paper size and type mismatched ===
The Paper type "Recycled" isn't recognized correctly. Use the type "Plain/Recycled".
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=== Troubleshooting === === I've changed my NETHZ password. How can I change the password in the keyring? ===
After a change of your NETHZ password, you have to re-enter your password on your next print-out. The safest way to do so is to follow [[#authenticated-printing|Storing credentials for authenticated printing]] again.
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==== Problem: I've printed something, but it didn't come out of the printer. ==== === I've started `system-config-printer` but no printers are available. ===
This probably means the cups service has crashed and can't recover itself. Restart your computer or contact <<MailTo(support AT ee DOT ethzDOT ch, "ISG D-ITET Support")>>.
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Solution I: First, you can check your local printer queue. Start `system-config-printer` in your console and right-click -> ''View Print Queue'' on the printer/queue you've selected previously. If your job's hanging here, try right-click -> ''Release''. If the desired jobs isn't listed in the queue, check https://www.vppspy.ethz.ch (VPP) or https://www.print.ethz.ch (PIA) for errors regarding your print-job. If you can't find any problem, please contact ISG.EE Support <support@ee.ethz.ch>. === Printouts out of the firefox PDF preview look different from what I see on the screen ===
The firefox PDF preview is not compatible with our system. Please download the pdf and print it using a PDF viewer. (e.g evince)
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Solution II: There is another option, why the printing system isn't working properly. If the first printer in your print dialog isn't "card-ethz", you might have set an environment variable called "CUPS_SERVER" on the value "ipp2vpp.ee.ethz.ch". Please check your .bashrc / .profile and delete the corresponding line. === The Application (e.g Firefox) crashes when I try to save the password in the keyring. ===
Please follow [[#authenticated-printing|Storing credentials for authenticated printing]] .
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==== Problem: I've changed my NETHZ password. How can I change the password in the keyring? ==== === After I filled in the authentication popup, there appears another popup that makes the whole display darker and asks about a password for the Gnome Keyring. My NETHZ password doesn’t work! ===
Open a console and type the command “seahorse”. A Gnome Keyring management tool appears. Delete the “Login “ keyring in the top left corner and log out of your current session. After another login, the authentication process should work.
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Solution: After a change of your NETHZ password, you have to re-enter your password on your next print-out. The safest way to do so, is following the "Initial steps to save the password for PIA printers" again. === Print jobs take very long to process/ print out when printing from Firefox ===
Please download the file and open it with the native document viewer (evince).
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==== Problem: I've started `system-config-printer` but no printers are available. ==== === A PDF printed from Google Chrome didn't come out of the printer. ===
Save the pdf, open it with the native document viewer and print it.
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Solution: This probably means the cups service has crashed and can't recover itself. Restart your computer or contact ISG.EE support <support@ee.ethz.ch>

==== Problem: The tick in the check box of the password saving dialog disappears every time i press it. (probably XFCE) ====

Solution: This is only a visual error. Press the check box once, and it will save the password.

==== Problem: Printouts out of the firefox PDF preview look messed up ====

Solution: The firefox PDF preview is not compatible with our system. Please download the pdf and print it using a PDF viewer. (e.g evince)

==== Problem: The Application (e.g Firefox) crashes when I try to save the password in the keyring. ====

Solution: Please follow the '''Initial steps to save the password for PIA printers'''.

==== Problem: After I filled in the authentication popup, there appears another popup that makes the whole display darker and asks about a password for the Gnome Keyring. My NETHZ password doesn’t work! ====

Solution: open a console and type the command “seahorse”. A Gnome Keyring management tool appears. delete the “Login “ keyring in the top left corner and log out of your current session. After another login, the authentication process should work.

==== Problem: Print jobs take very long to process/ print out. ====

Solution: If you are using the embedded Firefox pdfviewer, please download the file and open it with the native document viewer. (evince)		 === OFFENDING COMMAND: setpagedevice ===
This error often occurs when the document page size doesn't match the printer's paper size. Try to scale the document to a paper size available in the printer and try again.

Contents

  1. Linux printing
    1. General information
    2. Available print servers
    3. Available printers
    4. Storing credentials for authenticated printing
    5. Verifying stored credentials
    6. Setting the default printer
    7. Troubleshooting
      1. I've printed something, but it didn't come out of the printer.
      2. After sending the print job, the printer flashes a red LED and says: Paper size and type mismatched
      3. I've changed my NETHZ password. How can I change the password in the keyring?
      4. I've started `system-config-printer` but no printers are available.
      5. Printouts out of the firefox PDF preview look different from what I see on the screen
      6. The Application (e.g Firefox) crashes when I try to save the password in the keyring.
      7. After I filled in the authentication popup, there appears another popup that makes the whole display darker and asks about a password for the Gnome Keyring. My NETHZ password doesn’t work!
      8. Print jobs take very long to process/ print out when printing from Firefox
      9. A PDF printed from Google Chrome didn't come out of the printer.
      10. OFFENDING COMMAND: setpagedevice

Linux printing

General information

Available print servers

There are different print servers providing print queues for different geographical locations:

Stored credentials (see below) will contain the name of the print server.

Available printers

  • Printers are named and labelled following the scheme "p-building-floor-room", as for example "p-etf-d-104"
  • The pull printing queue is named "card-ethz" (Nashuatec printers) or "card-hp" for the newer HP printers. It allows releasing a print job on any printer fitted with a card reader by holding a ETH card to the sensor labelled "ETH CARD".
  • Printers in buildings ETF, ETL, ETZ and HIA are available from Linux clients managed by ISG D-ITET

,

Storing credentials for authenticated printing

In order to track usage and manage costs every print job needs to be submitted with personal ETH network credentials. The following process describes storing your credentials for automatic submission with every print job.

  1. Open a console

  2. Enter system-config-printer to open "Print Settings"

  3. Double-click the printer card-ethz or card-hp
    01_card-ethz.png

  4. In the appearing window "Printer Properties" press the button Print Test Page
    02_print-test-page.png

  5. Enter your username including the domain d\

  6. Tick the check box labelled Remember password to store your credentials

  7. Confirm the dialog by pressing the button OK
    In case of wrong credentials the dialog will simply reappear without warning about the fact
    03_authentication_required.png

  8. Press Print Test Page again, now the dialog asking for credentials should not reappear

Verifying stored credentials

  1. Open a console

  2. Enter seahorse to open "Passwords and Keys"

  3. Verify any entry similar to the one below in your keyring named "Login"
    04_verify_password.png

Setting the default printer

  1. Open a console

  2. Enter system-config-printer to open "Print Settings"

  3. Find the desired printer by entering parts of its name into the Filter field

  4. Double-click the printer you want to set as the default printer
    05_find-default-printer.png

  5. Close the appearing "Printer Properties" window by pressing the button Cancel
    06_activate-for-default.png
    Now the "Set As Default" menu entry used below will be available

  6. Right-click the printer you want to set as the default printer

  7. Select the menu entry Set As Default
    07_set-as-default.png

  8. Check Set as my personal printer and confirm by pressing Ok
    08_set-default-printer.png

  9. The default printer is now marked with a heart
    09_have-default-set.png

Troubleshooting

I've printed something, but it didn't come out of the printer.

Check your local printer queue. Start system-config-printer in your console and right-click -> View Print Queue on the printer/queue you've selected previously. If your job's hanging here, try right-click -> Release. If the desired jobs isn't listed in the queue, check Papercut for errors regarding your print-job. If you can't find any problem, please contact ISG D-ITET Support <support AT ee DOT ethzDOT ch>.

After sending the print job, the printer flashes a red LED and says: Paper size and type mismatched

The Paper type "Recycled" isn't recognized correctly. Use the type "Plain/Recycled".

I've changed my NETHZ password. How can I change the password in the keyring?

After a change of your NETHZ password, you have to re-enter your password on your next print-out. The safest way to do so is to follow Storing credentials for authenticated printing again.

I've started `system-config-printer` but no printers are available.

This probably means the cups service has crashed and can't recover itself. Restart your computer or contact ISG D-ITET Support <support AT ee DOT ethzDOT ch>.

Printouts out of the firefox PDF preview look different from what I see on the screen

The firefox PDF preview is not compatible with our system. Please download the pdf and print it using a PDF viewer. (e.g evince)

The Application (e.g Firefox) crashes when I try to save the password in the keyring.

Please follow Storing credentials for authenticated printing .

After I filled in the authentication popup, there appears another popup that makes the whole display darker and asks about a password for the Gnome Keyring. My NETHZ password doesn’t work!

Open a console and type the command “seahorse”. A Gnome Keyring management tool appears. Delete the “Login “ keyring in the top left corner and log out of your current session. After another login, the authentication process should work.

Please download the file and open it with the native document viewer (evince).

A PDF printed from Google Chrome didn't come out of the printer.

Save the pdf, open it with the native document viewer and print it.

OFFENDING COMMAND: setpagedevice

This error often occurs when the document page size doesn't match the printer's paper size. Try to scale the document to a paper size available in the printer and try again.

Printing/NashuatecLinux (last edited 2023-12-20 12:34:07 by pmeier)