Comment # 2 on bug 1018672 from Marc Chamberlin

(In reply to Noel Power from comment #1)
> There really is a lack of detail here about how this bug is produced (and
> the environment to trigger it)

Not by intent, one never knows what additional info will be needed by the
developers to solve a bug. I just wait until I am asked...  Wouldn't it be nice
if one could go to a tool like the KDE System Info or YaST2 and simply have it
export all such system info to a file that could be included in a bug report?
Just saying...

> 
> + What is the desktop are you using, you mention Dolphin so I suspect KDE
> (but that is not necessarily so) ?

On both my laptop and the desktop systems -

OpenSuSE Leap 42.2

KDE Plasma Version 5.8.3
KDE Frameworks Version 5.26.0
Qt Version 5.6.1
Kernel Version 4.4.36-8
OS Type 64-bit

> 
> + How is the share exposed?
>    is is mounted?
>    or connected somehow from the system ? (e.g. like in gnome the files app
> can hold a connection to the smb share that is accessible to client
> applications like thunderbird etc.)
> 

Not really sure what is being asked here. On my desktop, which is where I was
trying to store an email attachment from Thunderbird that was running on my
laptop, I had simply used YaST2 to define a Samba share to be exposed on my
SOHO network. The pertinent sections of the smb.conf file are -

[global]
        workgroup = CHAMBERLIN
        passdb backend = smbpasswd
        printing = cups
        printcap name = cups
        printcap cache time = 750
        cups options = raw
        map to guest = Bad User
        logon path = \\%L\profiles\.msprofile
        logon home = \\%L\%U\.9xprofile
        logon drive = P:
        usershare allow guests = Yes
        add machine script = /usr/sbin/useradd  -c Machine -d /var/lib/nobody
-s /bin/false %m$
        domain logons = No
        domain master = yes
        netbios name = Bigbang
        security = user
        wins support = No
        usershare max shares = 100
        local master = Yes
        preferred master = auto

[homedirs]
        available = Yes
        browseable = Yes
        comment = User Home Directories
        hide dot files = No
        inherit acls = Yes
        path = /home
        read only = No

/home is mounted on my desktop (Bigbang), shown in /etc/fstab as

UUID=bb3a7d35-cdfb-464b-9c4f-2b562e13d7d7 /home                ext3      
defaults              1 2

When I tried to save the attachment, to my home dir on my desktop I was asked
for my name and password, which I gave and it was accepted.

> + what version of samba is running?

4.4.2-9.1-x86_64

> + how is the samba setup, is the file share system a standalone server or
> are the systems involved part of a windows domain or.... ?

I don't know how to answer this, my guess is I am using standalone servers
since I don't have a clue about using "windows domain" and what that is... This
is on my home SOHO network with a mix of Windows and OpenSuSE systems on my
network. Nothing sophisticated... Hopefully the info from my smb.conf file will
answer your question.

> + is there any output from thunderbird e.g. if you run it from the console
> 

Nothing that makes any sense, but of interesting note, when I run Thunderbird
from the console I did get a slightly different behavior. When selecting which
computer on my network to store the attachment to, I was not shown, nor was I
able to find a way to specify, the desktop system (Bigbang in this case) that I
wanted to store the attachment to. I was shown other systems (not all) on my
network however, so I tried to save the attachment to one of them that is also
running OpenSuSE. Got the same response, i.e. "You can only select local
files". Here is what output I got -

marc@marcslaptop:~> thunderbird 

(thunderbird:18279): Gtk-WARNING **: Theme directory base/ of theme oxygen has
no size field

kmozillahelper(18340): couldn't create slave: "Unable to create io-slave:
klauncher said: Unknown protocol ''.
" 
kmozillahelper(18340): couldn't create slave: "Unable to create io-slave:
klauncher said: Unknown protocol ''.
" 
kmozillahelper(18340): couldn't create slave: "Unable to create io-slave:
klauncher said: Unknown protocol ''.
" 
kmozillahelper(18340) KSambaSharePrivate::testparmParamValue: Running testparm
("-d0", "-s", "--parameter-name", "usershare path")

** (thunderbird:18279): WARNING **: Invalid borders specified for theme pixmap:
        /usr/share/themes/Breeze/gtk-2.0/../assets/line-h.png,
borders don't fit within the image
kmozillahelper(18340)/kio (KDirModel) KDirModelPrivate::_k_slotDeleteItems: No
node found for item that was just removed:
KUrl("file:///home/marc/Documents/letter.txt") 
kmozillahelper(18340): couldn't create slave: "Unable to create io-slave:
klauncher said: Unknown protocol ''.
" 
kmozillahelper(18340): couldn't create slave: "Unable to create io-slave:
klauncher said: Unknown protocol ''.
" 
kmozillahelper(18340): couldn't create slave: "Unable to create io-slave:
klauncher said: Unknown protocol ''.
" 

> Note: I had no trouble saving an attachement from thunderbird from one leap
> 422 system (fully updated) to another leap 4.22 system (again fully updated)
> with both systems running gnome (and the file share connected via the
> 'Files' application) The samba system in this case was just setup as a
> default file server (with default workgroup 'WORKGROUP)
> 
> please provide more information

I tried to be as thorough as I could in giving (probably too much) info.
HTHs...