[Bug 1427252] [NEW] installer ignores preseeding settings added after --

[Mathieu Trudel-Lapierre]

Public bug reported:

When installing from the server iso or mini.iso (any debian-installer,
really), any preseeding parameters passed after the "--" (two dashes)
separator on the command line are silently ignored. This slightly
complicates matters for our users because they need to remember to add
the settings before the separator, which also has a different behavior.

Parameters added after the separator are meant to be passed on to the
installed system; so they are especially relevant to server installs
where one might need to specify a console= to be used for the
installation as well as on boot of the installed system.

The kernel now strips anything after "--"; which appears to be what
causes the problem. Switching to using "---" (three dashes), as already
done in Debian would fix the issue.

** Affects: debian-installer (Ubuntu)
     Importance: High
     Assignee: Mathieu Trudel-Lapierre (mathieu-tl)
         Status: In Progress

** Affects: installation-guide (Ubuntu)
     Importance: High
     Assignee: Mathieu Trudel-Lapierre (mathieu-tl)
         Status: In Progress

** Changed in: debian-installer (Ubuntu)
     Assignee: (unassigned) => Mathieu Trudel-Lapierre (mathieu-tl)

** Changed in: debian-installer (Ubuntu)
   Importance: Undecided => High

** Changed in: debian-installer (Ubuntu)
       Status: New => In Progress

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https://bugs.launchpad.net/bugs/1427252

Title:
  installer ignores preseeding settings added after --

Status in debian-installer package in Ubuntu:
  In Progress
Status in installation-guide package in Ubuntu:
  In Progress

Bug description:
  When installing from the server iso or mini.iso (any debian-installer,
  really), any preseeding parameters passed after the "--" (two dashes)
  separator on the command line are silently ignored. This slightly
  complicates matters for our users because they need to remember to add
  the settings before the separator, which also has a different
  behavior.

  Parameters added after the separator are meant to be passed on to the
  installed system; so they are especially relevant to server installs
  where one might need to specify a console= to be used for the
  installation as well as on boot of the installed system.

  The kernel now strips anything after "--"; which appears to be what
  causes the problem. Switching to using "---" (three dashes), as
  already done in Debian would fix the issue.

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