After looking at grub logfile I found that the setting to enable/disable this feature is located in /etc/defaults/kernel-helper-rc (I'm writing it from memory).
After commenting a line there, it comes back and appears to work as before. Now the question is, what was the reason to disable it? What I should look for? And how dangerous it is? The changelog didn't mention much besides just disabling it. -- no 'last good boot' entry in GRUB menu https://bugs.launchpad.net/bugs/284210 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs