That Canon software does not seem to be packaged in Ubuntu. As Simon
(simpoir) pointed out, this bug tracker is used to track problems in
Ubuntu.
Looks like the problematic printout:
Gtk-Message: 12:32:46.627: Failed to load module "canberra-gtk-module"
is affecting Firefox and Thunderbird, which are both distributed as
snaps. Other than printing that message, are affected programs actually
misbehaving, or is there missing functionality which you think is
related to missing canberra-gtk-module?
** Changed in: libcanberra (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/2111252
Title:
E: Package 'libcanberra-gtk-module' has no installation candidate
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