[Bug 966480] Re: The prompt asking for media removal is not shown at the end of the installation

[Steve Langasek]

Chris, this analysis is unlikely to be correct. Certainly at the time
the plymouth upstart jobs were written, plymouthd was only forking once
- and correctly opening its socket before detaching from the foreground.
If plymouthd behavior has since changed to double fork, and to not start
accepting connections until after the first fork, then not only would
there be a race condition, but upstart would completely lose all ability
to sanely track the plymouthd process - it would consider the plymouth
service 'stopped' as soon as the first child had exited.

And considering we're discussing a problem that occurs only on shutdown
- there have been no problems with reliability of plymouth splash
appearing on boot due to a corresponding race condition - I don't think
this is at all a likely explanation for the behavior.

Historically the problems with plymouth not displaying on shutdown from
an install image have been due to a race between the plymouth jobs
loading the required files into memory, and the casper jobs unmounting
the filesystem that these files live on (which is a prerequisite for
ejecting a DVD).  This bug is almost certainly an instance of this
general problem.

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https://bugs.launchpad.net/bugs/966480

Title:
  The prompt asking for media removal is not shown at the end of the
  installation

Status in The Plymouth splash screen:
  Won't Fix
Status in casper package in Ubuntu:
  Triaged
Status in plymouth package in Ubuntu:
  Triaged
Status in casper source package in Precise:
  Triaged
Status in plymouth source package in Precise:
  Triaged

Bug description:
  *** Edit ***
  This bug affects Ubuntu and other flavours as well and yes, it is alive and doing well with Saucy as well.

  See:
  https://bugs.launchpad.net/ubuntu/+source/casper/+bug/966480/comments/22

  *** End of Edit ***

  At the end of the installation, just after clicking on "Reboot Now" to
  restart the computer, the graphical environment is shut down and the
  TERM signal is sent, asking all processes to terminate. However, the
  prompt asking the user to remove the CD and press Enter is not shown
  (the CD is ejected, then the system hangs).

  Tested on today's (27 March 2012) KUbuntu Precise daily ISO in a VirtualBox VM (using VirtualBox 4.1.8, 1 GiB of RAM, 16 GiB HD, 4 CPUs, EFI disabled).
  ---
  ApportVersion: 1.95-0ubuntu1
  Architecture: amd64
  DistroRelease: Ubuntu 12.04
  InstallCmdLine: file=/cdrom/preseed/kubuntu.seed boot=casper maybe-ubiquity initrd=/casper/initrd.lz quiet splash -- debian-installer/language=it keyboard-configuration/layoutcode?=it
  InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120327)
  Package: ubiquity (not installed)
  ProcEnviron:
   LANGUAGE=
   TERM=xterm
   LANG=it_IT.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 3.2.0-20.32-generic 3.2.12
  Tags:  precise ubiquity-2.10.3
  Uname: Linux 3.2.0-20-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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