I had same issue running notify-send in another system by ssh. The error could be because you need dbus-launch that is in dbus-x11 package.
So you know: sudo aptitude install dbus-x11 at least, it worked for me. -- notify-send not working from acpi-scripts https://bugs.launchpad.net/bugs/92483 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs