Al ejecutar gimp desde consola en debian buster (10) aparece el siguiente mensaje:
$ gimp
Gtk-Message: 01:00:51.060: Failed to load module "canberra-gtk-module"
Esto es debido a que falta instalar el paquete libcanberra-gtk-module.
Para corregir el mensaje de error ejecutar:
$ sudo apt-get install -V libcanberra-gtk-module
...
The following NEW packages will be installed:
libcanberra-gtk-module (0.30-7)
libcanberra-gtk0 (0.30-7)
0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
...
Notas
De la descripción del paquete libcanberra0 (apt show libcanberra0):
libcanberra defines a simple abstract interface for playing event sounds.
El sistema por defecto tiene instalado el paquete para gtk-3
(libcanberra-gtk3-module) pero gimp aún utiliza gtk-2 por lo que el
mensaje es debido a que falta para dicha versión de gtk
(libcanberra-gtk-module).
Los paquetes instalados relacionados a libcanberra se obtienen mediante:
$ dpkg -l libcanberra* | grep ^ii
ii libcanberra-dev:amd64 0.30-7 amd64 simple interface for playing event sounds (development files)
ii libcanberra-gtk-common-dev 0.30-7 all simple interface for playing event sounds (GTK+ shared development files)
ii libcanberra-gtk-module:amd64 0.30-7 amd64 translates GTK+ widgets signals to event sounds
ii libcanberra-gtk0:amd64 0.30-7 amd64 GTK+ helper for playing widget event sounds with libcanberra
ii libcanberra-gtk3-0:amd64 0.30-7 amd64 GTK+ 3.0 helper for playing widget event sounds with libcanberra
ii libcanberra-gtk3-dev:amd64 0.30-7 amd64 simple interface for playing event sounds (GTK+ 3 development files)
ii libcanberra-gtk3-module:amd64 0.30-7 amd64 translates GTK3 widgets signals to event sounds
ii libcanberra-pulse:amd64 0.30-7 amd64 PulseAudio backend for libcanberra
ii libcanberra0:amd64 0.30-7 amd64 simple abstract interface for playing event sounds