Comment 27 for bug 1705345

Verified in artful:

Setting up plymouth-theme-ubuntu-text (0.9.2-3ubuntu19) ...
update-initramfs: deferring update (trigger activated)
Setting up plymouth-theme-ubuntu-logo (0.9.2-3ubuntu19) ...
update-initramfs: deferring update (trigger activated)
Processing triggers for initramfs-tools (0.125ubuntu12) ...
update-initramfs: Generating /boot/initrd.img-4.13.0-21-generic
bdmurray@clean-artful-amd64:~$ plymouth --ping --debug
[ply-event-loop.c:759] ply_event_loop_stop_watching_fd:stopping watching fd 6
[ply-event-loop.c:775] ply_event_loop_stop_watching_fd:removing destination for fd 6
[./plymouth.c:82] timeout_handler:ping: timed out waiting for plymouthd
[./ply-boot-client.c:810] ply_boot_client_detach_from_event_loop:detaching from event loop