Thanks for filing this bug in Ubuntu.
You seem to have an invalid configuration setting in your
/etc/samba/smb.conf:
$ testparm ./smb.conf
WARNING: The "syslog" option is deprecated
WARNING: Ignoring invalid value 'server' for parameter 'security'
Load smb config files from ./smb.conf
WARNING: The "syslog" option is deprecated
WARNING: Ignoring invalid value 'server' for parameter 'security'
Error loading services.
The "security" parameter can only have the values "auto", "user", "domain" or
"ads".
The reason you are seeing this error just now is probably because a samba
update triggers a service restart.
The other reason your attempts at purging samba didn't help is because
the config file /etc/samba/smb.conf is generated by the samba-common
package, not samba.
I suggest to fix your smb.conf and then try:
sudo apt update
sudo apt -f install
Or purge samba-common, which will remove smb.conf, and start over.
** Changed in: samba (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1857544
Title:
package samba 2:4.3.11+dfsg-0ubuntu0.16.04.24 failed to
install/upgrade: subprocess installed post-installation script
returned error exit status 1
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