Dear Maintainer,
I start notify-osd manually (after manually looking for the executable which was hard to find), as shown below, then use "notify-send hello hello". I get a black box at the top-right corner, and I'm unable to read any letters.
$ /usr/lib/x86_64-linux-gnu/notify-osd
** (notify-osd:3449): WARNING **: Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not provided by any .service files
** (notify-osd:3449): WARNING **: dnd_is_screensaver_active(): Got error "The name org.gnome.ScreenSaver was not provided by any .service files"
2
** (notify-osd:3449): WARNING **: dnd_is_screensaver_active(): Got error "The name org.gnome.ScreenSaver was not provided by any .service files"
** (notify-osd:3449): WARNING **: dnd_is_screensaver_active(): Got error "The name org.gnome.ScreenSaver was not provided by any .service files"
** (notify-osd:3449): WARNING **: dnd_is_screensaver_active(): Got error "The name org.gnome.ScreenSaver was not provided by any .service files"
** (notify-osd:3449): WARNING **: dnd_is_screensaver_active(): Got error "The name org.gnome.ScreenSaver was not provided by any .service files"