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Groups > linux.debian.bugs.dist > #1271286 > unrolled thread

Bug#1121237: lightdm: LightDM fails graphical login after removing gnome-keyring

Started byTedson <tedsonzechel@gmail.com>
First post2025-11-23 15:20 +0100
Last post2025-11-28 16:20 +0100
Articles 5 — 3 participants

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  Bug#1121237: lightdm: LightDM fails graphical login after removing gnome-keyring Tedson <tedsonzechel@gmail.com> - 2025-11-23 15:20 +0100
    Bug#1121237: lightdm: LightDM fails graphical login after removing gnome-keyring Yves-Alexis Perez <corsac@debian.org> - 2025-11-23 17:40 +0100
    Bug#1121237: lightdm: LightDM fails graphical login after removing gnome-keyring Yves-Alexis Perez <corsac@debian.org> - 2025-11-26 08:40 +0100
      Bug#1121237: lightdm: LightDM fails graphical login after removing gnome-keyring Peter B <peter@pblackman.plus.com> - 2025-11-26 11:10 +0100
    Bug#1121237: lightdm: LightDM fails graphical login after removing gnome-keyring Yves-Alexis Perez <corsac@debian.org> - 2025-11-28 16:20 +0100

#1271286 — Bug#1121237: lightdm: LightDM fails graphical login after removing gnome-keyring

FromTedson <tedsonzechel@gmail.com>
Date2025-11-23 15:20 +0100
SubjectBug#1121237: lightdm: LightDM fails graphical login after removing gnome-keyring
Message-ID<LUj6x-fah2-1@gated-at.bofh.it>
Package: lightdm
Version: 1.32.0-6+rpt2
Severity: important
X-Debbugs-Cc: tedsonzechel@gmail.com

Dear Maintainer,

Note: This report was written in English with the help of an automated translation tool.

Subject: LightDM fails to authenticate after removing gnome-keyring (Debian 13 Trixie, Raspberry Pi 4)

After removing the package "gnome-keyring", LightDM stopped accepting the correct user password on the graphical login screen. TTY login still works normally. The issue persists even after reinstalling gnome-keyring or removing and reinstalling LightDM completely. Multiple methods were tried to restore normal login, including guidance from ChatGPT, but none resolved the failure.

Environment:
- Debian 13 Trixie (arm64)
- Raspberry Pi 4
- Fully updated as of 23 Nov 2025
- Display manager: LightDM

Steps to reproduce:
1. System working normally.
2. Run: sudo apt remove gnome-keyring
3. Reboot.
4. On the graphical login screen, type the correct password → instant "authentication failed".

Expected result:
Graphical login should authenticate normally.

Actual result:
Password is rejected immediately.
TTY login works.

Relevant journalctl messages:
lightdm[1213]: PAM _pam_load_conf_file: unable to open config for /etc/pam.d/system-login
lightdm[1213]: PAM _pam_load_conf_file: unable to open config for /etc/pam.d/system-local-login
lightdm[1213]: PAM _pam_load_conf_file: unable to open config for /etc/pam.d/system-password

Other boot messages (possibly unrelated):
- 90-alsa-restore.rules warnings
- motion cannot create /var/log/motion
- apache2.service fails to start

Notes:
Attempts to restore the login functionality via different methods, including reinstalling packages and consulting guides, were unsuccessful. This suggests the issue may be deeper in LightDM’s PAM handling after gnome-keyring removal.

Request:
Please verify if removing gnome-keyring affects LightDM’s PAM configuration or switches it to a non-Debian PAM profile.

Thank you.



-- System Information:
Debian Release: 13.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: arm64 (aarch64)
Foreign Architectures: armhf

Kernel: Linux 6.12.47+rpt-rpi-v8 (SMP w/4 CPU threads; PREEMPT)
Kernel taint flags: TAINT_CRAP
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages lightdm depends on:
ii  adduser                                3.152
ii  dbus                                   1.16.2-2
ii  debconf [debconf-2.0]                  1.5.91
ii  libaudit1                              1:4.0.2-2+b2
ii  libc6                                  2.41-12+rpt1
ii  libgcrypt20                            1.11.0-7
ii  libglib2.0-0t64                        2.84.4-3~deb13u1
ii  libpam-systemd [logind]                257.9-1~deb13u1
ii  libpam0g                               1.7.0-5
ii  libxcb1                                1.17.0-2+b1
ii  libxdmcp6                              1:1.1.5-1
ii  lightdm-gtk-greeter [lightdm-greeter]  2.0.9-1+b2

Versions of packages lightdm recommends:
ii  xserver-xorg  1:7.7+24+deb13u1

Versions of packages lightdm suggests:
ii  accountsservice  23.13.9-7
ii  upower           1.90.9-1
pn  xserver-xephyr   <none>

-- Configuration Files:
/etc/lightdm/lightdm.conf changed [not included]
/etc/pam.d/lightdm changed [not included]
/etc/pam.d/lightdm-autologin changed [not included]

-- debconf information:
* shared/default-x-display-manager: lightdm
  lightdm/daemon_name: /usr/sbin/lightdm

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#1271301

FromYves-Alexis Perez <corsac@debian.org>
Date2025-11-23 17:40 +0100
Message-ID<LUli1-fbFD-1@gated-at.bofh.it>
In reply to#1271286
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

control: tag -1 unreproducible moreinfo
On Sun, 2025-11-23 at 11:09 -0300, Tedson wrote:
> Subject: LightDM fails to authenticate after removing gnome-keyring (Debian
> 13 Trixie, Raspberry Pi 4)
> 
> After removing the package "gnome-keyring", LightDM stopped accepting the
> correct user password on the graphical login screen. TTY login still works
> normally. The issue persists even after reinstalling gnome-keyring or
> removing and reinstalling LightDM completely. Multiple methods were tried to
> restore normal login, including guidance from ChatGPT, but none resolved the
> failure.

Hi,

thanks for the bug reporting, unfortunately I have no idea what could cause
that. Please provide logs (from /var/log/lightdm and /var/log/auth.log) and
the exact steps you did between the "working" and "non working" situations.

Regards,
- -- 
Yves-Alexis
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#1271637

FromYves-Alexis Perez <corsac@debian.org>
Date2025-11-26 08:40 +0100
Message-ID<LVii5-fPyg-1@gated-at.bofh.it>
In reply to#1271286
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

On Tue, 2025-11-25 at 14:27 -0300, Tedson Zoa wrote:
> System still normal with autologin. Then I ran: sudo apt remove gnome-
> keyring

Where there other packages removed along gnome-keyring?
- -- 
Yves-Alexis
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#1271659

FromPeter B <peter@pblackman.plus.com>
Date2025-11-26 11:10 +0100
Message-ID<LVkDf-fRfD-5@gated-at.bofh.it>
In reply to#1271637
Hi Tedson,

lightdm-gtk-greater recommends polkitd.
is that installed here?

Regards,
Peter

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#1271974

FromYves-Alexis Perez <corsac@debian.org>
Date2025-11-28 16:20 +0100
Message-ID<LW8ql-gq2h-11@gated-at.bofh.it>
In reply to#1271286
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

On Fri, 2025-11-28 at 12:15 -0300, Tedson Zoa wrote:
> Hi Yves-Alexis,
> 
> Yes. When I removed gnome-keyring, three additional packages were removed
> automatically:
> 
> - rpd-common (1.13)
> - rpd-wayland-core (1.13)
> - rpd-x-core (1.13)

Hi,

I'm sorry but those packages don't seem to be in Debian. Are you actually
using another distribution?
> 
Regards,
- -- 
Yves-Alexis
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