Comment 2 for bug 2024901

@juliank yes, the msg (well, more an error than a warning) is about the LVM that is w/o separate /boot.

And that made me remembering LP#1680101, pretty old, but I think we carried over the thoughts from back then to the subiquity installer as well, that does create a separate /boot by default, in case LVM is used.
Looks like this (LVM with separate /boot) is the way we want and expect it (to be on the save side).

I think such an installation is not done by the installer by default.

@ppohl May I ask if you've done a manual installation (with root and boot in LVM).
And was you system already upgraded from an older release (maybe from 18.04 or even 16.04)?

My suspicion here is now that such a setup is just not a supported one (even if it might have once worked).