Bug#1092651: gdm3: gdm-screenshot crashes under Wayland

[Olivier Berger]

Package: gdm3
Version: 43.0-3
Severity: normal

Dear Maintainer,

When logged-in through SSH, on a machine with an active (but screen locked) session, gdm-screenshot crashes with :

$ gdm-screenshot 

(gdm-screenshot:25665): GLib-GObject-WARNING **: 13:37:56.083: invalid cast from 'GdkWaylandDisplay' to 'GdkX11Display'
Erreur de segmentation

Hth,

Best regards,

-- System Information:
Debian Release: 12.7
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 6.11.10+bpo-amd64 (SMP w/4 CPU threads; PREEMPT)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages gdm3 depends on:
ii  accountsservice                       22.08.8-6
ii  adduser                               3.134
ii  dbus [default-dbus-system-bus]        1.14.10-1~deb12u1
ii  dbus-bin                              1.14.10-1~deb12u1
ii  dbus-daemon                           1.14.10-1~deb12u1
ii  dconf-cli                             0.40.0-4
ii  dconf-gsettings-backend               0.40.0-4
ii  debconf [debconf-2.0]                 1.5.82
ii  gir1.2-gdm-1.0                        43.0-3
ii  gnome-session [x-session-manager]     43.0-1+deb12u1
ii  gnome-session-bin                     43.0-1+deb12u1
ii  gnome-session-common                  43.0-1+deb12u1
ii  gnome-settings-daemon                 43.0-4
ii  gnome-shell                           43.9-0+deb12u2
ii  gnome-terminal [x-terminal-emulator]  3.46.8-1
ii  gsettings-desktop-schemas             43.0-1
ii  libaccountsservice0                   22.08.8-6
ii  libaudit1                             1:3.0.9-1
ii  libc6                                 2.36-9+deb12u8
ii  libcanberra-gtk3-0                    0.30-10
ii  libcanberra0                          0.30-10
ii  libgdk-pixbuf-2.0-0                   2.42.10+dfsg-1+deb12u1
ii  libgdm1                               43.0-3
ii  libglib2.0-0                          2.74.6-2+deb12u3
ii  libglib2.0-bin                        2.74.6-2+deb12u3
ii  libgtk-3-0                            3.24.38-2~deb12u2
ii  libgudev-1.0-0                        237-2
ii  libkeyutils1                          1.6.3-2
ii  libpam-modules                        1.5.2-6+deb12u1
ii  libpam-runtime                        1.5.2-6+deb12u1
ii  libpam-systemd [logind]               252.30-1~deb12u2
ii  libpam0g                              1.5.2-6+deb12u1
ii  librsvg2-common                       2.54.7+dfsg-1~deb12u1
ii  libselinux1                           3.4-1+b6
ii  libsystemd0                           252.30-1~deb12u2
ii  libx11-6                              2:1.8.4-2+deb12u2
ii  libxau6                               1:1.0.9-1
ii  libxcb1                               1.15-1
ii  libxdmcp6                             1:1.1.2-3
ii  mutter [x-window-manager]             43.8-0+deb12u1
ii  polkitd                               122-3
ii  procps                                2:4.0.2-3
ii  systemd-sysv                          252.30-1~deb12u2
ii  ucf                                   3.0043+nmu1
ii  x11-common                            1:7.7+23
ii  x11-xserver-utils                     7.7+9+b1
ii  xfce4-session [x-session-manager]     4.18.1-1
ii  xfce4-terminal [x-terminal-emulator]  1.0.4-1
ii  xfwm4 [x-window-manager]              4.18.0-1
ii  xterm [x-terminal-emulator]           379-1

Versions of packages gdm3 recommends:
ii  at-spi2-core                       2.46.0-5
ii  desktop-base                       12.0.6+nmu1~deb12u1
ii  gnome-session [x-session-manager]  43.0-1+deb12u1
ii  x11-xkb-utils                      7.7+7
ii  xfce4-session [x-session-manager]  4.18.1-1
ii  xserver-xephyr                     2:21.1.7-3+deb12u8
ii  xserver-xorg                       1:7.7+23
ii  zenity                             3.44.0-1

Versions of packages gdm3 suggests:
pn  libpam-fprintd        <none>
ii  libpam-gnome-keyring  42.1-1+b2
pn  libpam-pkcs11         <none>
pn  libpam-sss            <none>
ii  orca                  43.1-1

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