When I send print to a network printer (HP Laserjet 2200d), CUPS asks for username/password. It doesn't happen with other printers and I'm sure its a CUPS issue, because it's asking the password even if I'm not connected to the network.

Here is my /etc/cups/cupsd.conf:

#

#

# Sample configuration file for the CUPS scheduler.  See "man cupsd.conf" for a

# complete description of this file.

#



# Log general information in error_log - change "warn" to "debug"

# for troubleshooting...

LogLevel warn



# Deactivate CUPS' internal logrotating, as we provide a better one, especially

# LogLevel debug2 gets usable now

MaxLogSize 0



# Administrator user group...

SystemGroup lpadmin





# Only listen for connections from the local machine.

Listen localhost:631

Listen /var/run/cups/cups.sock



# Show shared printers on the local network.

Browsing Off

BrowseOrder allow,deny

BrowseAllow all

BrowseLocalProtocols CUPS dnssd

BrowseAddress @LOCAL



# Default authentication type, when authentication is required...

DefaultAuthType Basic



# Web interface setting...

WebInterface Yes



# Restrict access to the server...

<Location />

  Order allow,deny

</Location>



# Restrict access to the admin pages...

<Location /admin>

  Order allow,deny

</Location>



# Restrict access to configuration files...

<Location /admin/conf>

  AuthType Default

  Require user @SYSTEM

  Order allow,deny

</Location>



# Set the default printer/job policies...

<Policy default>

  # Job/subscription privacy...

  JobPrivateAccess default

  JobPrivateValues default

  SubscriptionPrivateAccess default

  SubscriptionPrivateValues default



  # Job-related operations must be done by the owner or an administrator...

  <Limit Create-Job Print-Job Print-URI Validate-Job>

    Order deny,allow

  </Limit>



  <Limit Send-Document Send-URI Hold-Job Release-Job Restart-Job Purge-Jobs Set-Job-Attributes Create-Job-Subscription Renew-Subscription Cancel-Subscription Get-Notifications Reprocess-Job Cancel-Current-Job Suspend-Current-Job Resume-Job Cancel-My-Jobs Close-Job CUPS-Move-Job CUPS-Get-Document>

    Require user @OWNER @SYSTEM

    Order deny,allow

  </Limit>



  # All administration operations require an administrator to authenticate...

  <Limit CUPS-Add-Modify-Printer CUPS-Delete-Printer CUPS-Add-Modify-Class CUPS-Delete-Class CUPS-Set-Default CUPS-Get-Devices>

    AuthType Default

    Require user @SYSTEM

    Order deny,allow

  </Limit>



  # All printer operations require a printer operator to authenticate...

  <Limit Pause-Printer Resume-Printer Enable-Printer Disable-Printer Pause-Printer-After-Current-Job Hold-New-Jobs Release-Held-New-Jobs Deactivate-Printer Activate-Printer Restart-Printer Shutdown-Printer Startup-Printer Promote-Job Schedule-Job-After Cancel-Jobs CUPS-Accept-Jobs CUPS-Reject-Jobs>

    AuthType Default

    Require user @SYSTEM

    Order deny,allow

  </Limit>



  # Only the owner or an administrator can cancel or authenticate a job...

  <Limit Cancel-Job CUPS-Authenticate-Job>

    Require user @OWNER @SYSTEM

    Order deny,allow

  </Limit>



  <Limit All>

    Order deny,allow

  </Limit>

</Policy>



# Set the authenticated printer/job policies...

<Policy authenticated>

  # Job/subscription privacy...

  JobPrivateAccess default

  JobPrivateValues default

  SubscriptionPrivateAccess default

  SubscriptionPrivateValues default



  # Job-related operations must be done by the owner or an administrator...

  <Limit Create-Job Print-Job Print-URI Validate-Job>

    AuthType Default

    Order deny,allow

  </Limit>



  <Limit Send-Document Send-URI Hold-Job Release-Job Restart-Job Purge-Jobs Set-Job-Attributes Create-Job-Subscription Renew-Subscription Cancel-Subscription Get-Notifications Reprocess-Job Cancel-Current-Job Suspend-Current-Job Resume-Job Cancel-My-Jobs Close-Job CUPS-Move-Job CUPS-Get-Document>

    AuthType Default

    Require user @OWNER @SYSTEM

    Order deny,allow

  </Limit>



  # All administration operations require an administrator to authenticate...

  <Limit CUPS-Add-Modify-Printer CUPS-Delete-Printer CUPS-Add-Modify-Class CUPS-Delete-Class CUPS-Set-Default>

    AuthType Default

    Require user @SYSTEM

    Order deny,allow

  </Limit>



  # All printer operations require a printer operator to authenticate...

  <Limit Pause-Printer Resume-Printer Enable-Printer Disable-Printer Pause-Printer-After-Current-Job Hold-New-Jobs Release-Held-New-Jobs Deactivate-Printer Activate-Printer Restart-Printer Shutdown-Printer Startup-Printer Promote-Job Schedule-Job-After Cancel-Jobs CUPS-Accept-Jobs CUPS-Reject-Jobs>

    AuthType Default

    Require user @SYSTEM

    Order deny,allow

  </Limit>



  # Only the owner or an administrator can cancel or authenticate a job...

  <Limit Cancel-Job CUPS-Authenticate-Job>

    AuthType Default

    Require user @OWNER @SYSTEM

    Order deny,allow

  </Limit>



  <Limit All>

    Order deny,allow

  </Limit>

</Policy>



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