[Bug 1448318] Re: 15.04: Full disk encryption with home dir encryption: have to enter FDE password twice

[gravy45]

** Attachment removed: "Screenshot.png"
   https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/1448318/+attachment/4383460/+files/Screenshot.png

** Attachment removed: "plymouth-debug(1).log"
   https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/1448318/+attachment/4383461/+files/plymouth-debug%281%29.log

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https://bugs.launchpad.net/bugs/1448318

Title:
   15.04: Full disk encryption with home dir encryption: have to enter
  FDE password twice

Status in plymouth package in Ubuntu:
  Confirmed

Bug description:
  Noticed that having a full disk encryption install with home directory
  encryption requires entering the full disk encryption password twice:
  once to unlock the disk, and again to unlock the 'swap'. Did not
  configure a separate swap, this is the default swap provided.

  System: Kernel: 3.19.0-15-generic x86_64 (64 bit gcc: 4.9.2)
  Desktop: MATE 1.8.2 (Gtk 3.14.12-0ubuntu2)
  Distro: Ubuntu 15.04 vivid
  Graphics: Card: Advanced Micro Devices [AMD/ATI] Cedar [Radeon HD 5000/6000/7350/8350 Series] bus-ID: 01:00.0
             Display Server: X.Org 1.17.1 drivers: ati,radeon (unloaded: fbdev,vesa) Resolution: 1920x1200 at 60.0hz
             GLX Renderer: Gallium 0.4 on AMD CEDAR GLX Version: 3.0 Mesa 10.5.2 Direct Rendering: Yes

  Confirmed it occurs on a physical machine (above hardware), also get the following bug:
  https://bugs.launchpad.net/ubuntu/vivid/+source/linux/+bug/1359689

  In Virtualbox 4.3.26, the preceding bug does not appear, but two
  passwords must be entered (please see attached Virtualbox screenshot).
  Also confirmed on Ubuntu with unity desktop.

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