Bug#898698: gdm3: GDM logon fails for some users: "Could not finalize jump to vt1"

[Johannes Rohr]

Package: gdm3
Version: 3.28.1-1
Severity: important

Some users after logging on are returned to the login screen after a few seconds. In /var/log/syslog I find:

GdmSessionWorker: couldn't finalize jump to VT 1: Unterbrechung während des Betriebssystemaufrufs

(that's "Interruption during the operating system call")

I have already deleted everything related to session and session state for
those users, but this doesn't seem to make a difference. So I am pretty lost
where to search further. This is observed both with the Wayland and the X
session of GNOME


-- System Information:
Debian Release: buster/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.16.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages gdm3 depends on:
ii  accountsservice                       0.6.45-1
ii  adduser                               3.117
ii  dconf-cli                             0.28.0-2
ii  dconf-gsettings-backend               0.28.0-2
ii  debconf [debconf-2.0]                 1.5.66
ii  gir1.2-gdm-1.0                        3.28.1-1
ii  gnome-session [x-session-manager]     3.28.1-1
ii  gnome-session-bin                     3.28.1-1
ii  gnome-settings-daemon                 3.28.1-1
ii  gnome-shell                           3.28.1-1
ii  gnome-terminal [x-terminal-emulator]  3.28.1-2
ii  gsettings-desktop-schemas             3.28.0-1
ii  libaccountsservice0                   0.6.45-1
ii  libaudit1                             1:2.8.3-1
ii  libc6                                 2.27-3
ii  libcanberra-gtk3-0                    0.30-6
ii  libcanberra0                          0.30-6
ii  libgdk-pixbuf2.0-0                    2.36.11-2
ii  libgdm1                               3.28.1-1
ii  libglib2.0-0                          2.56.1-2
ii  libglib2.0-bin                        2.56.1-2
ii  libgtk-3-0                            3.22.30-1
ii  libkeyutils1                          1.5.9-9.2
ii  libpam-modules                        1.1.8-3.7
ii  libpam-runtime                        1.1.8-3.7
ii  libpam-systemd                        238-4
ii  libpam0g                              1.1.8-3.7
ii  librsvg2-common                       2.40.20-2
ii  libselinux1                           2.7-2+b2
ii  libsystemd0                           238-4
ii  libwrap0                              7.6.q-27
ii  libx11-6                              2:1.6.5-1
ii  libxau6                               1:1.0.8-1+b2
ii  libxcb1                               1.13-1
ii  libxdmcp6                             1:1.1.2-3
ii  lsb-base                              9.20170808
ii  mutter [x-window-manager]             3.28.1-2
ii  policykit-1                           0.105-20
ii  ucf                                   3.0038
ii  x11-common                            1:7.7+19
ii  x11-xserver-utils                     7.7+8

Versions of packages gdm3 recommends:
ii  at-spi2-core    2.28.0-3
ii  desktop-base    9.0.5
ii  x11-xkb-utils   7.7+4
ii  xserver-xephyr  2:1.19.6-1
ii  xserver-xorg    1:7.7+19
ii  zenity          3.28.1-1

Versions of packages gdm3 suggests:
pn  gnome-orca            <none>
pn  libpam-fprintd        <none>
ii  libpam-gnome-keyring  3.28.0.2-1

-- Configuration Files:
/etc/gdm3/daemon.conf changed:
[daemon]
[security]
[xdmcp]
[chooser]
[debug]
Enable=true


-- debconf information:
* shared/default-x-display-manager: gdm3
  gdm3/daemon_name: /usr/sbin/gdm3