Comment 0 for bug 1447282

I'm still sorting out the details and eliminating variables, but as far as I can tell:

Steps to reproduce
===============

1) Install Ubuntu using GPT partitioning for the OS drive[*]

2) Choose "require my password to login", and check "encrypt my home directory"

Expected behavior
===============

No special user interaction should be required to initialized the crytposwap other than normally logging in

Actual behavior
============

Prior to lightdm coming up, you will be prompted to enter your passphrase to unlock the cryptoswap, similar to how you would be prompted to unlock the OS drive when using full disk encryption (see attached photo).

When lightdm comes up, you have to enter your password/passphrase again to login.

Work-arounds
===========

1) This only seems to happen when using GTP partitioning, not MBR... so use MBR if you can

2) Even with GTP partitioning, booting with init=/sbin/upstart seems to reliably fix the problem, so it certainly seems systemd related

Notes
=====

* As far as I can tell, there isn't a way to force Ubiquity to create a GPT partition table when the OS drive is < 2TB, but it will automatically use GPT partitioning when the OS drive is >= 2TB. My particular test was done using the System76 imaging server, which by default uses GPT partitioning even when the OS drive is < 2TB.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: systemd 219-7ubuntu3
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic x86_64
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Wed Apr 22 11:40:29 2015
EcryptfsInUse: Yes
MachineType: System76, Inc. Kudu Professional
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-15-generic root=UUID=e6c5aea5-d57c-410d-abce-66e96175e946 ro quiet splash vt.handoff=7
SourcePackage: systemd
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/15/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1.03.03RS76
dmi.board.asset.tag: Tag 12345
dmi.board.name: Kudu Professional
dmi.board.vendor: System76, Inc.
dmi.board.version: kudp1
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: System76, Inc.
dmi.chassis.version: kudp1
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.03.03RS76:bd01/15/2014:svnSystem76,Inc.:pnKuduProfessional:pvrkudp1:rvnSystem76,Inc.:rnKuduProfessional:rvrkudp1:cvnSystem76,Inc.:ct9:cvrkudp1:
dmi.product.name: Kudu Professional
dmi.product.version: kudp1
dmi.sys.vendor: System76, Inc.