Whenever I install software or get a software update, I'm always getting a Samba4 error. Here's a capture:

Errors were encountered while processing: samba4 Error in function: Setting up samba4 (4.0.0+dfsg1-1ubuntu1) ... ERROR(): uncaught exception - unable to parse dn string File "/usr/lib/python2.7/dist-packages/samba/netcmd/init.py", line 175, in _run return self.run(*args, **kwargs) File "/usr/lib/python2.7/dist-packages/samba/netcmd/dbcheck.py", line 108, in run fix=fix, yes=yes, quiet=quiet, in_transaction=started_transaction) File "/usr/lib/python2.7/dist-packages/samba/dbchecker.py", line 56, in init self.infrastructure_dn = ldb.Dn(samdb, "CN=Infrastructure," + samdb.domain_dn()) dpkg: error processing samba4 (--configure): subprocess installed post-installation script returned error exit status 255

This particular error occurred after installing Cheese Webcam Booth in Xubuntu 13.04 using the Ubuntu Software Center. I grabbed these details after the installer told me a package operation failed. Cheese seems to have installed just fine. So, this is a nuisance error more than anything else. I'm not even sure Samba4 is misbehaving, as I can print to a shared Windows printer.

Ideas on how to eliminate the messages? Should I uninstall and purge Samba4 and then reinstall?

1 Answer 1


I think you might want just the package samba instead of samba4. I found these 2 threads which seem to be saying that.

Don't let the second links title fool you, it's dealing with the same type of error message as yours.

  • Thank you for your answer. Newbie here, sorry. How should I proceed? Uninstall and purge Samba4 and then install Samba? Commented Jun 30, 2013 at 13:26
  • 1
    @AdrianKeister - yes that's what I would do. Don't install samba4, install samba.
    – slm
    Commented Jun 30, 2013 at 16:45
  • Great! I'll give that a try and let you know how it works out. Commented Jun 30, 2013 at 19:13
  • 1
    @AdrianKeister - Awesome, glad that resolved your problem!
    – slm
    Commented Jul 1, 2013 at 14:01

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