[Bug 1703490] [NEW] Unable to mount network volume on 17.10 Samba server

[Patrick Dunford]

Public bug reported:

I have a computer with a new 17.10 installation, and I have network
resources on it that I want to share to other computers on my network,
using Samba. I set it up the same way with Samba as I did with the old
16.04 installation, but all the other computers on the network that are
running Xubuntu can't connect to it like they did before.

The following are the user experiences of different computers in my
network connecting to shared SMB resources on other computers:

16.04 client mount.cifs to 16.04 server: full access
16.04 client path run/user/1000/gvfs to 16.04 server: full access
17.10 client mount.cifs to 16.04 server: full access

16.04 client mount.cifs to 17.10 server: access denied error
17.10 client mount.cifs to 16.04 server: access denied error
16.04 client path run/user/1000/gvfs to 17.10 server: read only access
Windows 10 client explorer map drive to 17.10 server: full access

the server used to run 16.04 and is now running 17.10. It is the same
computer and has the same network resources shared on it that it had
when it was running 16.04.

The server installation of 17.10 was a clean install but the home folder
was existing on a different volume and was remounted after the install.

As you can see a Windows 10 computer is the only computer in the network
that can connect to the Samba share with full access and no apparent
difference in the user experience.

Ubuntu Artful Aardvark (development branch) 17.10
apt-cache policy samba
samba:
  Installed: 2:4.5.8+dfsg-2ubuntu3
  Candidate: 2:4.5.8+dfsg-2ubuntu3
  Version table:
 *** 2:4.5.8+dfsg-2ubuntu3 500
        500 http://nz.archive.ubuntu.com/ubuntu artful/main amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: samba 2:4.5.8+dfsg-2ubuntu3
ProcVersionSignature: Ubuntu 4.10.0-26.30-generic 4.10.17
Uname: Linux 4.10.0-26-generic x86_64
ApportVersion: 2.20.5-0ubuntu5
Architecture: amd64
CurrentDesktop: XFCE
Date: Tue Jul 11 13:25:40 2017
SambaClientRegression: Yes
SourcePackage: samba
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: samba (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug artful

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https://bugs.launchpad.net/bugs/1703490

Title:
  Unable to mount network volume on 17.10 Samba server

Status in samba package in Ubuntu:
  New

Bug description:
  I have a computer with a new 17.10 installation, and I have network
  resources on it that I want to share to other computers on my network,
  using Samba. I set it up the same way with Samba as I did with the old
  16.04 installation, but all the other computers on the network that
  are running Xubuntu can't connect to it like they did before.

  The following are the user experiences of different computers in my
  network connecting to shared SMB resources on other computers:

  16.04 client mount.cifs to 16.04 server: full access
  16.04 client path run/user/1000/gvfs to 16.04 server: full access
  17.10 client mount.cifs to 16.04 server: full access

  16.04 client mount.cifs to 17.10 server: access denied error
  17.10 client mount.cifs to 16.04 server: access denied error
  16.04 client path run/user/1000/gvfs to 17.10 server: read only access
  Windows 10 client explorer map drive to 17.10 server: full access

  the server used to run 16.04 and is now running 17.10. It is the same
  computer and has the same network resources shared on it that it had
  when it was running 16.04.

  The server installation of 17.10 was a clean install but the home
  folder was existing on a different volume and was remounted after the
  install.

  As you can see a Windows 10 computer is the only computer in the
  network that can connect to the Samba share with full access and no
  apparent difference in the user experience.

  Ubuntu Artful Aardvark (development branch) 17.10
  apt-cache policy samba
  samba:
    Installed: 2:4.5.8+dfsg-2ubuntu3
    Candidate: 2:4.5.8+dfsg-2ubuntu3
    Version table:
   *** 2:4.5.8+dfsg-2ubuntu3 500
          500 http://nz.archive.ubuntu.com/ubuntu artful/main amd64 Packages
          100 /var/lib/dpkg/status

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: samba 2:4.5.8+dfsg-2ubuntu3
  ProcVersionSignature: Ubuntu 4.10.0-26.30-generic 4.10.17
  Uname: Linux 4.10.0-26-generic x86_64
  ApportVersion: 2.20.5-0ubuntu5
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Tue Jul 11 13:25:40 2017
  SambaClientRegression: Yes
  SourcePackage: samba
  UpgradeStatus: No upgrade log present (probably fresh install)

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