login manager configuration shows duplicate users

[Stilor]

Binary package hint: kdm

System Settings -> Login Manager -> Users

The "System UIDs" editboxes contain 1000 and 29999 initially. In the "below" box, remove last 0 (so the contents becomes 100). Now many system users are shown in the list. Put that 0 back, system users are not filtered out. Remove 0, all those system users are added to the list again as duplicates.

$ dpkg-query -s kdm
Package: kdm
Status: install ok installed
Priority: optional
Section: x11
Installed-Size: 4072
Maintainer: Kubuntu Developers <email address hidden>
Architecture: i386
Source: kdebase-workspace
Version: 4:4.3.1-0ubuntu1
Replaces: kdebase-workspace-bin (<< 4:4.2.85), kdebase-workspace-data (<< 4:4.2.85)
Provides: x-display-manager
Depends: kdebase-runtime (>= 4:4.3.0), kdebase-workspace-libs4+5 (>= 4:4.3.1), kdelibs5 (>= 4:4.3.1), libc6 (>= 2.4), libck-connector0 (>= 0.2.1), libdbus-1-3 (>= 1.0.2), libpam0g (>= 0.99.7.1), libqimageblitz4, libqt4-svg (>= 4.5.1), libqt4-xml (>= 4.5.1), libqtcore4 (>= 4.5.1), libqtgui4 (>= 4.5.1), libstdc++6 (>= 4.1.1), libx11-6, libxau6, libxdmcp6, libxtst6, debconf (>= 0.5) | debconf-2.0, lsb-base (>= 3.2-14), consolekit, kdebase-workspace-kgreet-plugins (= 4:4.3.1-0ubuntu1)
Recommends: logrotate, xserver-xorg-core | xserver, kdebase | x-session-manager | x-window-manager, xterm | x-terminal-emulator
Suggests: kdepasswd
Conflicts: desktop-base (<< 4.0.4), kdebase-data (<< 4:4.0.0-1)
Conffiles:
 /etc/init.d/kdm 9cfa3a3a883b6bef93e23fd15b94107e
 /etc/pam.d/kdm f8e043e7de6dd93d537ffe72a2fbae75
 /etc/pam.d/kdm-np 527a9b02acd0858ea7e061e29e3f127c
 /etc/logrotate.d/kdm a07bff9d80d56119f8db95696445f86a
 /etc/kde4/kdm/kdm.options 5822fe4d026ec65fa8dc9d83854f6f42
 /etc/kde4/kdm/README e22153008a45ad278940020fc4594e70
 /etc/kde4/kdm/Xaccess 03b7b6cd8eacc152567b7f4a3ae9f537
 /etc/kde4/kdm/Xreset d2099510564fbdd4122b65f1fbada809
 /etc/kde4/kdm/Xsession 8751308f61373d3218177f5e05965e6f
 /etc/kde4/kdm/Xsetup e2fe2d1f60e9775c8dd97f4a2773809e
 /etc/kde4/kdm/Xstartup 50e7c8359c41e21dce045eea773a6a3c
 /etc/kde4/kdm/Xwilling ab97870cde0424d576375813874a304e
 /etc/kde4/kdm/backgroundrc 2ae4df1d13f2a8eae3ee2a965277205f
 /etc/kde4/kdm/kdmrc 16efad399f25cdceef274e474d42e3d6
Description: KDE Display Manager for X11
 KDM manages a collection of X servers running on local or remote machines.
 It allows users to easily log into their preferred desktop environment, connect
 to a remote XDMCP server, or shut down the system.
 .
 KDM supports custom themes and can display a list of users with icons.
 Additional user icons can be found in the 'kdepasswd' package.
 .
 This package is part of the KDE 4 base workspace module.
Homepage: http://www.kde.org/
Original-Maintainer: Debian Qt/KDE Maintainers <email address hidden>

[Rich Johnson (nixternal)]

I am unable to reproduce this with Karmic and KDE 4.3.1. I am attaching a screenshot as proof. Do you still get this issue with the newer releases?

[Stilor (stilor)]

Yes, I still can reproduce it - with freshly updated packages. Note that to
reproduce it you need to repeat the actions described above more than once
(after 1st repetition you'll have system users added once, even though they
are not removed).

So, to reproduce:
- Open System Settings -> Login Manager
- Check that "Inverse selection" is checked; System UIDs: Below is set to
1000.
- Click at the end of "System UIDs: Below" editbox
- Hit backspace; you'll notice more users added to the list
- Press '0'; you'll notice that the system users added at the previous step
are not removed - even though "System UIDs: Below" now contains 1000 as it was
before.
- Hit backspace, press '0'. You'll notice a second copy of all system users
added.
- Hit backspace, press '0'; third copy is added
- ...

Regards,
Alexey.

On Saturday 03 October 2009 12:04:03 am Richard Johnson wrote:
> I am unable to reproduce this with Karmic and KDE 4.3.1. I am attaching
> a screenshot as proof. Do you still get this issue with the newer
> releases?
>
> ** Changed in: kdebase-workspace (Ubuntu)
> Status: New => Incomplete
>

[Rich Johnson (nixternal)]

I appreciate the clarification and the steps involved to recreate it. You are correct. I just did it about 20 times and had 20 duplicates. I will check upstream and see if I can find any reports of this. If not, I will create a report. Thanks again!

[Rich Johnson (nixternal)]

Filed an upstream report and attached it to this report. At this time I was unable to reach anyone on IRC to attempt to replicate the issue with either another distro or with a trunk build, so hopefully someone does soon. Thanks!

[Rjohnson-m (rjohnson-m)]

Version: (using KDE 4.3.1)
OS: Linux

When changing the UID 'Below' setting in the Login Manager under System Settings causes duplicate users. To reproduce, do the following:

1) System Settings -> Advanced -> Login Manager
2) Go to the Users tab
3) In the box 'System UIDs' there is a 'Below' text box, place mouse cursor at the end of the text (default is 1000)
4) Backspace one time (list on the right for users and groups should expand to match results
5) Add the '0' back making it 1000 again - users didn't go away from previous step (bug 1)
6) Remove backspace again making the number 100 - user/group list duplicates pretty much everything (bug 2)

If you continue removing and adding the 0, the list keeps duplicating.

[Harald Sitter (apachelogger)]

Closing in favor of upstream report.

[Albert Astals Cid (aacid)]

kdm reached it's end of life with Plasma 4, whose last bugfix release was last August 2015, we are sorry we did not get to fix this bug.

We encourage you to try Plasma 5 and its recommended display manager SDDM and it's control module kcm_ssdm.

And please do not hesitate to file bugs against it if you find any.

Sorry again we could not fix your bug.