[Bug 1427252] Re: installer ignores preseeding settings added after --

[Adam Conrad]

For trusty, it's incredibly invasive to switch from -- to --- for only
some d-i variants, so this change will end up affecting all variants,
from vanilla to lts-utopic to lts-vivid.  This shouldn't cause any real
issues, I'd guess, since people who pass custom args via automation
already completely override the d-i command line to replace it with
their own anyway.

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

Title:
  installer ignores preseeding settings added after --

Status in debian-installer package in Ubuntu:
  Fix Released
Status in installation-guide package in Ubuntu:
  Fix Released
Status in debian-installer source package in Trusty:
  New
Status in installation-guide source package in Trusty:
  New
Status in debian-installer source package in Utopic:
  Triaged
Status in installation-guide source package in Utopic:
  Triaged

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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