I have a debian-11-minimal template that I have installed many packages to my liking. In it I also have the Signal messenger installed, but I am not getting notifications for my incoming messages.
I don’t have dunst nor xfce4-notifyd installed in that template, however, neither seems whonix-ws-16-dvm template have those, yet my app.element.io chat program on tor browser is able to send notifications to dom0.
Do I really need dunst for getting signal messenger notifications?
Whonix ships mate-notification-daemon. Although Tor Browser / Firefox apparently also has its own fallback code to show (surprisingly rich) notifications when no notification daemon is available at all.
VM notifications are not sent to dom0 btw, they’re displayed by the VM.