[Bug 1362333] Re: After reboot of Ubuntu installation, password for LVM encryption is not accepted

[Steve Langasek]

In a VM, I've reproduced some very strange behavior with plymouth and
cryptsetup.  On a new install, I see:

 - plymouth ask-for-password exits non-zero, and returns an empty string to the cryptsetup hook
 - if I hit Esc to switch to the text interface instead of the graphical splash, then the first passphrase attempt after switching always fails, and the second one always succeeds
 - when in graphical mode, plymouth ask-for-password never return non-zero

I don't have any explanation for this behavior at the moment.  It has
also not been reproducible on my laptop (real hardware), where I use
crypted root with cryptsetup+plymouth, but I will do a test shortly.

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https://bugs.launchpad.net/bugs/1362333

Title:
  After reboot of Ubuntu installation,  password for LVM encryption is
  not accepted

Status in “ubiquity” package in Ubuntu:
  Confirmed

Bug description:
  I have tried several times to perform an installation of Gnome Ubuntu x64 (Utopic Beta 1  26/08/2014 ISO), after reboot, you are asked to insert your passphrase, but it is not accepted it keeps on displaying that the passphrase is not correct even though I am inserting the correct one, and so booting of Ubuntu Gnome isn't possible after install.
  I have performed the installation on a Virtualbox VM and I still have it if you need something else.
  I am attaching the /var/log directory of the /dev/sda5 LVM volume that I could manage to unencrypt, when unencrypting it manually the password was accepted and /dev/sda5 mounted, so I am sure the password I was trying to insert was the correct one.
  This is the test I was carrying out when I detected this bug:
  http://iso.qa.ubuntu.com/qatracker/testcases/1451/info.
  This is the ISO I tested on: http://cdimage.ubuntu.com/ubuntu-gnome/daily-live/20140826/utopic-desktop-amd64.iso.

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