So, stopwatch at hands, it takes a grand total of 39 seconds from turning on my Dell XPS 9550 to the user selection screen.
Is it normal? Is it too slow? I am running 18.04.1 with the latest Dell bios (1.8.0). Fast boot in bios settings is on Auto (turning it on did not produced any change) and Ubuntu is booting in Legacy mode from the SSD. I have disabled all other possible booting sources (diskette drive etc.)