Bug#960764: gnome-control-center: Ugly abort when Gnome not running

[James Youngman]

Package: gnome-control-center
Version: 1:3.30.3-2~deb10u1
Severity: minor

To reproduce, run X in an environement where Gnome isn't the desktop
environment (see below for my specific details).  Then run
gnome-control-center.

$ gnome-control-center 
**
ERROR:../shell/cc-shell-model.c:458:cc_shell_model_set_panel_visibility: assertion failed: (valid)
Aborted

This should say instead something like.

gnome-control-center works only in the Gnome desktop environment.

My details: my .xsession file looks much like this (though really the
salient point is that it doesn't start Gnome):

#! /bin/sh
# This script will be run with "${SHELL}" "${HOME}/.xsession" so the
# hash-bang line above will usually do nothing.
wm='i3'
echo "Invoking window manager ${wm}"
"${wm}"


-- System Information:
Debian Release: 10.4
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.19.0-9-amd64 (SMP w/12 CPU cores)
Kernel taint flags: TAINT_USER
Locale: LANG=en_IE.UTF-8, LC_CTYPE=en_IE.UTF-8 (charmap=UTF-8), LANGUAGE=en_IE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages gnome-control-center depends on:
ii  accountsservice            0.6.45-2
ii  apg                        2.2.3.dfsg.1-5
ii  colord                     1.4.3-4
ii  desktop-base               10.0.2
ii  desktop-file-utils         0.23-4
ii  gnome-control-center-data  1:3.30.3-2~deb10u1
ii  gnome-desktop3-data        3.30.2.1-2
ii  gnome-settings-daemon      3.30.2-3
ii  gsettings-desktop-schemas  3.28.1-1
ii  libaccountsservice0        0.6.45-2
ii  libatk1.0-0                2.30.0-2
ii  libc6                      2.28-10
ii  libcairo-gobject2          1.16.0-4
ii  libcairo2                  1.16.0-4
ii  libcanberra-gtk3-0         0.30-7
ii  libcanberra0               0.30-7
ii  libcheese-gtk25            3.31.90-1
ii  libcheese8                 3.31.90-1
ii  libclutter-1.0-0           1.26.2+dfsg-10
ii  libclutter-gtk-1.0-0       1.8.4-4
ii  libcolord-gtk1             0.1.26-2
ii  libcolord2                 1.4.3-4
ii  libcups2                   2.2.10-6+deb10u3
ii  libfontconfig1             2.13.1-2
ii  libgdk-pixbuf2.0-0         2.38.1+dfsg-1
ii  libglib2.0-0               2.58.3-2+deb10u2
ii  libgnome-bluetooth13       3.28.2-4~deb10u1
ii  libgnome-desktop-3-17      3.30.2.1-2
ii  libgoa-1.0-0b              3.30.1-2
ii  libgoa-backend-1.0-1       3.30.1-2
ii  libgrilo-0.3-0             0.3.7-1
ii  libgtk-3-0                 3.24.5-1
ii  libgtop-2.0-11             2.38.0-4
ii  libgudev-1.0-0             232-2
ii  libibus-1.0-5              1.5.19-4+deb10u1
ii  libkrb5-3                  1.17-3
ii  libmm-glib0                1.10.0-1
ii  libnm0                     1.14.6-2+deb10u1
ii  libnma0                    1.8.20-1.1
ii  libpango-1.0-0             1.42.4-8~deb10u1
ii  libpangocairo-1.0-0        1.42.4-8~deb10u1
ii  libpolkit-gobject-1-0      0.105-25
ii  libpulse-mainloop-glib0    12.2-4+deb10u1
ii  libpulse0                  12.2-4+deb10u1
ii  libpwquality1              1.4.0-3
ii  libsecret-1-0              0.18.7-1
ii  libsmbclient               2:4.9.5+dfsg-5+deb10u1
ii  libsoup2.4-1               2.64.2-2
ii  libupower-glib3            0.99.10-1
ii  libwacom2                  0.32-1
ii  libwayland-server0         1.16.0-1
ii  libx11-6                   2:1.6.7-1
ii  libxi6                     2:1.7.9-1
ii  libxml2                    2.9.4+dfsg1-7+b3

Versions of packages gnome-control-center recommends:
ii  cracklib-runtime              2.9.6-2
ii  cups-pk-helper                0.2.6-1+b1
ii  gkbd-capplet                  3.26.1-1
ii  gnome-online-accounts         3.30.1-2
ii  gnome-user-docs               3.30.2-1
ii  gnome-user-share              3.28.0-2
ii  iso-codes                     4.2-1
pn  libcanberra-pulse             <none>
ii  libnss-myhostname             241-7~deb10u4
ii  mousetweaks                   3.12.0-5
pn  network-manager-gnome         <none>
ii  policykit-1                   0.105-25
pn  pulseaudio-module-bluetooth   <none>
ii  realmd                        0.16.3-2
ii  rygel                         0.36.2-4
ii  rygel-tracker                 0.36.2-4
ii  system-config-printer-common  1.5.11-4

Versions of packages gnome-control-center suggests:
ii  gnome-software           3.30.6-5
ii  gstreamer1.0-pulseaudio  1.14.4-1
pn  libcanberra-gtk-module   <none>
ii  libcanberra-gtk3-module  0.30-7
ii  x11-xserver-utils        7.7+8

-- no debconf information