lah7
2
Notify OSD seems to still work in 18.04. From a fresh install after installing notify-osd
:

If you've upgraded to 18.04, you could try reinstalling so it reconfigures itself:
sudo apt install --reinstall notify-osd notify-osd-icons
I'm aware there is a notifyosdconf
which is a modified notify-osd
adding customisation options - I'm not sure if it still works today: