[Bug 847782] Re: installer writes a permanent ethernet entry in interfaces file

[Clint Byrum]

Thanks for the new info Colin.

In light of all the info here, I think the right way to go is to update
the failsafe.conf to inform the user that the system boot is delayed
waiting for network configuration. This will give the user a chance to
inspect their network configuration, and will allow support people to
quickly ascertain the status of /etc/network/interfaces and fix it.

I believe the way to do this is with a plymouth message after 20
seconds. This will ensure that any plugged in system sees no message,
but anybody waiting an unreasonable amount of time is informed quickly.
Opening a task against upstart since that is where failsafe.conf lives.

** Also affects: upstart (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: upstart (Ubuntu Oneiric)
       Status: New => In Progress

** Changed in: upstart (Ubuntu Oneiric)
     Assignee: (unassigned) => Clint Byrum (clint-fewbar)

** Changed in: upstart (Ubuntu Oneiric)
   Importance: Undecided => High

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https://bugs.launchpad.net/bugs/847782

Title:
  installer writes a permanent ethernet entry in interfaces file

Status in “netcfg” package in Ubuntu:
  Confirmed
Status in “upstart” package in Ubuntu:
  In Progress
Status in “netcfg” source package in Oneiric:
  Won't Fix
Status in “upstart” source package in Oneiric:
  In Progress

Bug description:
  If Ubiquity (the installer) is ran while connected to the internet via
  ethernet, writes an "auto ethX" line in /etc/network/interfaces. This
  means that the boot up process, including bringing up the X system by
  upstart, will be delayed for whatever timeout is defined in
  /etc/init/failsafe.conf (see bug 839595). This is currently 120
  seconds.

  So far, it seems like the best solution would be for the installer to
  give the user the option to choose what to do with the interfaces file
  after finishing installation. This will also be an issue with upgrades
  to Oneiric, so the upgrade tool should probably offer the user to
  "fix" the interfaces file. In all cases, the user should be offered a
  sane default behavior.

  Please see bug #839595 for more information

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