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Ubuntu 12.04 printer share keeps asking for password and I can't authenticate from any machine. Why?? We've installed it in two machine (to act as printer servers) and we get the same problem.

It doesn't matter what we do, change or install. We can't figure out why the printer share asks for password even using all of the users that are registered in the server.

What is wrong with Precise? I want it to work without a password, but it is not even working WITH one!

I gave up! The samba version that comes with Precise is insufferable! I tried various settings that didn't work. I should've used Mint from the beginning.

[Edit] My printers config. Remembering that samba is 3.6.3 in ubuntu 12.04

load printers = yes
[printers]
comment = All Printers
browseable = yes
path = /var/spool/samba
printable = yes
guest ok = yes
readonly = yes
create mask = 0700

[print$]
comment = Printer Drivers
path = /var/lib/samba/printers
browseable = yes
readonly = yes
guest ok = yes
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4 Answers 4

Reset to default
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I have rarely had luck configuring a CIFS-reachable printer within Ubuntu. I've done it, but I don't do it every day: it's possible, with subtleties.

However, I've been able to share printers via http and https routes. The quick description of this method:

    [US] (= Ubuntu "Server")    example IP = 10.0.0.1
    [WC] (= Windows "Client")

  1. On [US], install a printer, ensuring that it is "Shared" via the GUI (e.g. the system-config-printer interface) or manipulation of /etc/cups/ files.

  2. On [WC], use a web browser and point to CUPS on [US].

    e.g. http://10.0.0.1:631/

    This should show you the web interface provided by CUPS. "CUPS is the standards-based, open source printing system ..." This also serves as a test to make sure that the machines can even talk, and that you don't have a more basic problem (e.g. firewall) to solve.

  3. The upper-right tab on this web page is a link to the Printers list.

  4. Right-click-and-copy the URL to the printer in question, and you can paste that into the Windows "Add Printer Wizard" interface for a network printer.

As asked, this should solve the authentication issue by bypassing Samba (CIFS). However, note that this method allows anyone on your local network to print to the shared printer, and it relies on a stable network IP address for [US].

It is also possible to restrict through authentication who can print, but that is for a different question.

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  • Hi! Can I access it from windows machines? Using the \\server\printer_share?
    – msmafra
    May 15, 2012 at 0:06
  • I don't think so, as that syntax implies CIFS. However, Windows may have gotten smarter since 7, so try it and see.
    – hunteke
    May 22, 2012 at 20:31
  • Someone else probably solved that there. I don't work there neither my colleague. Only we were trying to solve it. Using via CUPS as suggested by hunteke it's a very much elegant solution. Nowadays I use that one.
    – msmafra
    Feb 8, 2014 at 13:13
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Seems like bug in Samba in Ubuntu 12.04...

https://bugs.launchpad.net/ubuntu/+source/samba/+bug/967410

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If you still not get any solution. Try this.

Normally root password is disabled in ubuntu, Change the root password and try that.

"sudo passwd root" in terminal, set a new password for root. Give the same while prompts for authentication.

It worked for me.

Source: "Adding Printer" dialog asks for root password?

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this worked for me. ensure that 'publish shared printers' option is enabled in your printer server and in your clients 'show printers shared by other system' option is also enabled. n/b this works best for linux server and linux clients

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