[Bug 967410] Re: Windows clients cannot connect to shared printers

[James Page]

Reviewing all of the comments on this bug report to-date its looks like
there are probably two issues:

1) A potential race condition between cups and samba which means that
samba is unable to lookup the list of printers on startup.

This is indicated by the following log messages in
/var/log/samba/log.smbd:

[2012/04/02 13:17:15.089590, 0] printing/print_cups.c:110(cups_connect)
  Unable to connect to CUPS server localhost:631 - Connection refused
[2012/04/02 13:17:15.090587, 0] printing/print_cups.c:487(cups_async_callback)
  failed to retrieve printer list: NT_STATUS_UNSUCCESSFUL

I think we can put in a conditional wait in the upstart configuration
file for smbd to ensure that the cups daemon is in a running state
before samba starts.

2) A change in behaviour which subsequently causes printing to fail with
authentication issues (thats a premise - remains unproven IMHO).

I've tried to reproduce this issue using a Windows XP Client -> Ubuntu
12.10 Server; however I was able to print successfully so we need to dig
into this a bit further.

It would be really helpful if the original bug report or anyone still
seeing issues could increase the log verbosity by adding:

   log level = 3

to /etc/samba/smb.conf; any additional log information post restart for
samba for both the server processes and the client connections would be
really helpful.

This second issue might be related to bug 990388 - but its hard to tell
at this point in time.

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https://bugs.launchpad.net/bugs/967410

Title:
  Windows clients cannot connect to shared printers

Status in “samba” package in Ubuntu:
  Confirmed
Status in “samba” source package in Precise:
  Confirmed
Status in “samba” source package in Quantal:
  Confirmed

Bug description:
  Since installing 12.04 I can no longer connect my windows XP clients to my laser printers on the Ubuntu system using samba. 
  It works on 11.10 using the exact same smb.conf file.  
  I can see the printers from the windows clients, I can select it, I install the drivers locally from the windows pc.  When I click next I get the message "Windows cannot connect to the printer. Either the printer name was typed incorrectly or the specified printer has lost its connection to the sever". 

  This is a deal breaker for me.

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