Running 16.04 in 2 different machines, one of which is affected by the bug and the other not. I prefer to stay with Xenial since I admin a few family systems and the workload reduces over time with Xenial now in caretaker mode. Each was installed at different times, the unaffected one having
Further to the above on wireless start, booting into *.23 kernel, Bionic loses all the retarding symptoms for Gnome start and for wireless network start. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu.
Installing plymouth 0.9.3-3 over the distro 0.9.3-1 had no effect on this system - amd64 - either. Steps taken with dpkg for a hash-checked .deb were: Preparing to unpack .../plymouth_0.9.3-3_amd64.deb ... Unpacking plymouth (0.9.3-3) over (0.9.3-1ubuntu7) ... Setting up plymouth (0.9.3-3) ...
I can report a very similar experience after the update to kernel *-24. The difference with my machine - a barebook Clevo packaged by Pioneer Computers Australia - is that no keyboarding, usb mouse, or touchpad use reproducably reduces the hang time by plymouth to less than an average 90seconds.