gdm3 coredumps when starting

[Gerald Quintana]

Ubuntu Noble after apt dist-upgrade: gdm3 does not start anymore

2024-04-03T20:50:44.437550+02:00 huahine kernel: audit: type=1400 audit(1712170244.433:170): apparmor="DENIED" operation="capable" class="cap" profile="/usr/lib/snapd/snap-confine" pid=3205 comm="snap-confine" capability=12 capname="net_admin"
2024-04-03T20:50:44.437561+02:00 huahine kernel: audit: type=1400 audit(1712170244.433:171): apparmor="DENIED" operation="capable" class="cap" profile="/usr/lib/snapd/snap-confine" pid=3205 comm="snap-confine" capability=38 capname="perfmon"
2024-04-03T20:50:44.441534+02:00 huahine kernel: audit: type=1400 audit(1712170244.437:172): apparmor="DENIED" operation="open" class="file" profile="snap-update-ns.snapd-desktop-integration" name="/proc/3260/maps" pid=3260 comm="5" requested_mask="r" denied_mask="r" fsuid=120 ouid=0
2024-04-03T20:50:44.445081+02:00 huahine snapd-desktop-integration.snapd-desktop-integration[3205]: Sorry, home directories outside of /home needs configuration.
2024-04-03T20:50:44.445123+02:00 huahine snapd-desktop-integration.snapd-desktop-integration[3205]: See https://forum.snapcraft.io/t/11209 for details.
2024-04-03T20:50:44.445759+02:00 huahine systemd[3191]: snap.snapd-desktop-integration.snapd-desktop-integration.service: Main process exited, code=exited, status=1/FAILURE
2024-04-03T20:50:44.445831+02:00 huahine systemd[3191]: snap.snapd-desktop-integration.snapd-desktop-integration.service: Failed with result 'exit-code'.
2024-04-03T20:50:44.487215+02:00 huahine systemd[1]: gdm.service: Main process exited, code=dumped, status=5/TRAP
2024-04-03T20:50:44.487368+02:00 huahine systemd[1]: gdm.service: Failed with result 'core-dump'.
2024-04-03T20:50:44.487791+02:00 huahine systemd[1]: gdm.service: Triggering OnFailure= dependencies.
2024-04-03T20:50:44.490976+02:00 huahine systemd[1]: Starting plymouth-quit.service - Terminate Plymouth Boot Screen...
2024-04-03T20:50:44.508150+02:00 huahine systemd[1]: Finished plymouth-quit.service - Terminate Plymouth Boot Screen.
2024-04-03T20:50:45.527533+02:00 huahine systemd[1]: gdm.service: Scheduled restart job, restart counter is at 1.
2024-04-03T20:50:45.527669+02:00 huahine systemd[1]: plymouth-quit.service: Deactivated successfully.
2024-04-03T20:50:45.527894+02:00 huahine systemd[1]: Stopped plymouth-quit.service - Terminate Plymouth Boot Screen.
2024-04-03T20:50:45.550213+02:00 huahine systemd[1]: Starting gdm.service - GNOME Display Manager...
2024-04-03T20:50:45.612812+02:00 huahine systemd[1]: Started gdm.service - GNOME Display Manager.
2024-04-03T20:50:45.641041+02:00 huahine snapd-desktop-i[2853]: Detected new session c7 at /org/freedesktop/login1/session/c7
2024-04-03T20:50:45.666028+02:00 huahine systemd[1]: Started session-c7.scope - Session c7 of User gdm.
2024-04-03T20:50:45.667383+02:00 huahine gdm3: Gdm: GdmSession: no session desktop files installed, aborting...
2024-04-03T20:50:45.669555+02:00 huahine kernel: traps: gdm3[3276] trap int3 ip:72f305e29681 sp:7ffccb379de0 error:0 in libglib-2.0.so.0.7903.0[72f305de5000+a0000]
2024-04-03T20:50:45.759719+02:00 huahine systemd[1]: gdm.service: Main process exited, code=dumped, status=5/TRAP
2024-04-03T20:50:45.759800+02:00 huahine systemd[1]: gdm.service: Failed with result 'core-dump'.
2024-04-03T20:50:45.759829+02:00 huahine systemd[1]: gdm.service: Triggering OnFailure= dependencies.
2024-04-03T20:50:45.778560+02:00 huahine systemd[1]: Starting plymouth-quit.service - Terminate Plymouth Boot Screen...
2024-04-03T20:50:45.790694+02:00 huahine systemd[1]: Finished plymouth-quit.service - Terminate Plymouth Boot Screen.

Package: gdm3
Status: install ok installed
Priority: optional
Section: gnome
Installed-Size: 2016
Maintainer: Ubuntu Developers <email address hidden>
Architecture: amd64
Version: 46~rc-1ubuntu2
Provides: x-display-manager
Depends: accountsservice (>= 0.6.35), adduser, bash (>= 4.3), dconf-cli (>= 0.20), dconf-gsettings-backend (>= 0.20), dbus-bin | systemd-sysv, dbus-daemon, default-dbus-system-bus | dbus-system-bus, default-logind | logind, gir1.2-gdm-1.0 (= 46~rc-1ubuntu2), ubuntu-session | gnome-session | x-session-manager | x-window-manager | x-terminal-emulator, gnome-session-bin (>= 3.37.0), gnome-session-common (>= 3.37.0-2~), gnome-settings-daemon (>= 3.37.0), gnome-shell (>= 3.37.90), gsettings-desktop-schemas, libgdm1 (= 46~rc-1ubuntu2), libglib2.0-bin (>= 2.35.0), libpam-modules (>= 0.72-1), libpam-runtime (>= 0.76-13.1), librsvg2-common, polkitd, procps, ucf, x11-common (>= 1:7.6+11), x11-xserver-utils, debconf (>= 0.5) | debconf-2.0, libaccountsservice0 (>= 0.6.55), libaudit1 (>= 1:2.2.1), libc6 (>= 2.38), libcanberra-gtk3-0t64 (>= 0.25), libcanberra0t64 (>= 0.2), libgdk-pixbuf-2.0-0 (>= 2.22.0), libglib2.0-0t64 (>= 2.79.0), libgtk-3-0t64 (>= 3.0.0), libgudev-1.0-0 (>= 232), libjson-glib-1.0-0 (>= 1.5.2), libkeyutils1 (>= 1.5.9), libpam0g (>= 0.99.7.1), libselinux1 (>= 3.1~), libsystemd0 (>= 226), libx11-6, libxau6 (>= 1:1.0.9), libxcb1, libxdmcp6
Recommends: at-spi2-core, ubuntu-session | gnome-session | x-session-manager, x11-xkb-utils, xserver-xephyr, xserver-xorg, zenity
Suggests: orca, libpam-fprintd (>= 0.8.0-2), libpam-sss (>= 2.3.0-1), libpam-pkcs11, libpam-gnome-keyring
Conffiles:
 /etc/gdm3/Init/Default b39e6eb0ed834c74049ae9fa0f22c98c
 /etc/gdm3/PostLogin/Default.sample ea12aa729c8c6c09ac7643f0dfba5726
 /etc/gdm3/PostSession/Default faa25c6c7940f930d70538c673a39726
 /etc/gdm3/PreSession/Default 230165e8c40035a23a4a053a98d32ea6
 /etc/gdm3/Prime/Default f13634ea87f90dde2bec58dd26c7f49e
 /etc/gdm3/PrimeOff/Default 1f9f942f3d7e4cdb5b287cdde8494c59
 /etc/gdm3/Xsession bfdc116c9ef3c842fd243b0fdf8dc1cb
 /etc/gdm3/config-error-dialog.sh 674d1cb31784baeae751c943c6a7898a
 /etc/gdm3/custom.conf c6aca2790519798ce963b8b3254e22b3
 /etc/init.d/gdm3 e81ec39ff5c22e69749306e27f5ebb90
 /etc/insserv.conf.d/gdm3 61c8ab53b1be0158ef1ac24492e4543a
 /etc/pam.d/gdm-autologin 984f197ed79c28ba0131a51b7291aa42
 /etc/pam.d/gdm-fingerprint 961bb460f45aac79d5c3f84505936382
 /etc/pam.d/gdm-launch-environment 0803541abf05a0295ac5cf789f912155
 /etc/pam.d/gdm-password 1af84655e3a912c2b7b3502188036f36
 /etc/pam.d/gdm-smartcard-pkcs11-exclusive 58755193fb76730bb92517402420b4a1
 /etc/pam.d/gdm-smartcard-sssd-exclusive ba4ec46a3b52cbee7628498b635ca8e4
 /etc/pam.d/gdm-smartcard-sssd-or-password 68298fc024f6f30876b2ced5164e3f9c
Description: GNOME Display Manager
 GDM provides the equivalent of a "login:" prompt for X displays: it
 asks for a login and starts graphical sessions.
 .
 It supports multiple seats and switching between multiple users.
 .
 The greeter is based on the GNOME libraries and applications, and its
 look and design are the same as those of a GNOME session.
Homepage: https://wiki.gnome.org/Projects/GDM/
Original-Maintainer: Debian GNOME Maintainers <email address hidden>

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please:

1. Run:

    ubuntu-bug YOURFILE.crash

   Then tell us the ID of the newly-created bug.

2. If step 1 failed then look at https://errors.ubuntu.com/user/ID where ID is the content of file /var/lib/whoopsie/whoopsie-id on the machine. Do you find any links to recent problems on that page? If so then please send the links to us.

Please take care to avoid attaching .crash files to bugs as we are unable to process them as file attachments. It would also be a security risk for yourself.

[Gerald Quintana (gerald.quintana)]

Hi @vanvugt

1. ubuntu-bug reports that crash file is broken:

*** Erreur : Rapport d'anomalie non valide

Ce rapport d'anomalie est endommagé et ne peut pas être traité.

MalformedProblemReport("Malformed problem report: Line 'pAcy1bNTl34QMn2XUvr+cs26NgMy9Y8LMj1kVP691p4XMpavbI9OTvhBK2dApjiuik7eopMrIZeSvR+FTA9jy5ApON0kyL2ovZBpvnohX0
...
OSJGfrOMtjXxOuR/tIv6CYIgCIIgCIIgCIIgCIIgCIIgCOK75P8C8uMc2gBgHAI=\\n' does not contain a colon for separating the key from the value. Is this a proper .crash text file?")

I tried to generate a new one by removing it, but same problem with the new one.

2. The crash report may be:

https://errors.ubuntu.com/oops/90b37860-f246-11ee-8ad9-fa163ec8ca8c
and
https://errors.ubuntu.com/oops/218124fa-ede2-11ee-8aca-fa163ec8ca8c

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1717878, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.

[Daniel van Vugt (vanvugt)]

The package archive for 24.04 is unstable at the moment which likely caused this bug. I suggest waiting at least a few days, maybe a week, before attempting any more system-wide updates.

[Gerald Quintana (gerald.quintana)]

Issue is fixed after upgrade and
apt install --reinstall ubuntu-session

Thanks!

[landert (landert)]

I meet the same problem and solve it also by sudo apt install --reinstall ubuntu-session,Thanks!