Comment 39 for bug 967410

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.