What version of notify-osd are you using, because this problem was fixed some time ago. notify-osd ships a set of fallback icons in /usr/share/notify-osd/icons. It uses these if your icon theme does not provide it's own icons, and works fine for me here.
What version of notify-osd are you using, because this problem was fixed some time ago. notify-osd ships a set of fallback icons in /usr/share/ notify- osd/icons. It uses these if your icon theme does not provide it's own icons, and works fine for me here.