Comment 33 for bug 1779476

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. The appearance of the cursor is fairly unpredictable within those times and at a rare few boots, CTRL+ALT F2 sent the system into a wobbly dance between the shell and plymouth.
Holding SHIFT during boot however does produce an acceptable and reproducable boot into Xorg time of about 15s.
Installing and enabling haveged in sysctrl has the same effect as holding the SHIFT key.
Booting into the *-23 kernel removes the hang and any of the wobbly moves between shell and plymouth.

As requested, after uninstalling haveged and booting to *-24 kernel, both using the SHIFT workaround and the longer playing with keyboard and pointers, issuing the command:
lsof | grep /dev/random

listed nothing.

Interesting that with sudo prefixed, the command complains:

'lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/1000/gvfs
      Output information may be incomplete.'
While it doesn't complain when the user themself issues the command.
Is this a bug too, or is it logical that the virtual gnome file system is indeed run per user
and not by root?

Neither forms of the command list anything.