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

[Martin Wimpress]

I have been experiencing this issue for weeks, ever since plumouth 0.9.0
landed. I've discussed it with Alan Pope and Steve Langasek. I've just
tried installing stock Ubuntu 14.10 Beta 2 desktop i386 on the following
systems and selected full disk encryption on all of them during the
install:

  * Thinkpad T43p (ATI/AMD graphics chipset, open source driver) - On reboot my pass phrase is not accepted.
  * Thinkpad X61s (Intel graphics chipset, open source driver) - On reboot I can enter my pass phrase.
  * VirtualBox Guest (no virtualbox-guest-* modules installed) - On reboot my pass phrase is not accepted.

Therefore I suspect this issue is in someway releated to the graphics
driver. The following bug raised against Plymouth also describes the
same issue.

  * https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/1359689

The other concern is users running 14.04 with full disk encrpytion and
who then upgrade to 14.10 could effectively brick their computer.

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

Title:
  After reboot of Ubuntu Gnome 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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