Background: I originally experienced this problem with an installed
version of Xubuntu Hardy (8.04). I established that the Live CD had the
same bug. As I do not wish to change my LTS installation at present, I
have since tried Live CDs for Jaunty (9.04) and Karmic (9.10) with
similar results.
With Live CDs, the default user is "ubuntu" and sudo commands respond to
an empty string as a password (""). Following a fresh boot into the
Xubuntu Karmic Live CD I have now set a user password for "ubuntu" with
the following results:
Use passwd command to change default ubuntu password from "" (null) to
"123456789".
cat/etc/groups confirms user "ubuntu" is in groups "adm" (4) and
admin(115).
ubu...@ubuntu:/etc$ sudo
/usr/share/system-tools-backends-2.0/scripts/SystemToolsBackends.pl
-m UsersConfig --platform ubuntu-8.04 -v; sudo /usr/sbin/system-tools-backends
-nd
begin::Start of work report.
file_locate_tool_success::Found tool [uname].
file_run_pipe_success::Piping command [LC_ALL=C PATH=$PATH:/sbin:/usr/sbin
/bin/uname -s 2>
/dev/null |] for reading.
file_locate_tool_success::Found tool [usermod].
file_locate_tool_success::Found tool [userdel].
file_locate_tool_success::Found tool [useradd].
file_locate_tool_success::Found tool [adduser].
file_locate_tool_success::Found tool [deluser].
file_locate_tool_success::Found tool [chfn].
file_locate_tool_failed::Couldn't find tool [pw].
^C
ubu...@ubuntu:/etc$
As default user "ubuntu", created a new user "test" as detailed in post #24
above.
Entered password of "123456789" when requested.
No entry appears in Users Settings box.
home directory for "test" is created.
cat /etc/passwd now shows sixteen users, but new user "test" is not shown.
cat /etc/group now shows same nine groups:
(root, daemon, audio, nogroup, syslog, messagebus, avahi, haldaemon, ubuntu)
sudo capability again lost. Passwords of both "123456789" and "" (null)
are now rejected with message "ubuntu is not in the sudoers file."
--
Creating an user destroys most of users and groups configuration
https://bugs.launchpad.net/bugs/240437
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