Bug#241434: d-i: multiple paths for keyboard selector, "back" broken
Quoting Yann Dirson (firstname.lastname@example.org):
> Well, there is more, although I'm not sure it's a different problem:
> After this, I'm sent back to the main menu instead of proceeding to the next
> step. And shortly after I'm presented with the list of modules to attempt
> to load. I'm quite sure that should not be the experience of the average
> user who just hit enter at the boot prompt...
This is because priority has been lowered to low. The main-menu
only shows up at medium priority. Same for keyboard type choice.
Hitting "Back" at the keyboard choice screen automatically lowered the
debconf priority. This is mostly a consequence of the general design
of the installer, IIRC.
Thus, you were on main menu at medium priority.
Choosing back lowered the priority again.....and you end up with
installing at "low" priority and be prompted on about everything....