Comment 26 for bug 1818899

I have the same problem

18.04.2 LTS, 4.15.0-46-generic #49

With something perhaps useful :

I have grub for multi-boot, and only this one ubuntu OS installed

-When the computer was on, with ubuntu or another system, a system restart leads me to grub, that leads me to ubuntu, and it is stuck.
-At this point a command like ctrl+alt+del restarts the system, takes me back to grub, that leads to ubuntu, and it keeps hanging.

When i perform a hard reset while it's stuck (computer button), grub leads me to ubuntu that boots instantaneously, no hanging.

Repeated several times.
So for the moment, hard reset is my workaround.

I don't know how apport works so sorry not to feed the issue with one.
(typed apport-collect 1818899, ubuntu replies im not 'abonné' (french)...etc.)