[Bug 966450] Re: Kubuntu doesn't prompt for a password on encrypted LVM boot

[Ubuntu QA Website]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/966450

** Tags added: iso-testing

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Title:
  Kubuntu doesn't prompt for a password on encrypted LVM boot

Status in “debian-installer” package in Ubuntu:
  New

Bug description:
  When installing the kubuntu image as part of the iso testing
  (kubuntu/daily/20120327/precise-alternate-amd64.iso) using the
  alternate installer from the daily builds for March 27, 2012, I
  attemted to make a full-disk encrypted setup using LVM. I used the
  instructions from the isotesting testcase:
  http://testcases.qa.ubuntu.com/Install/AlternateEncryptedLvm

  The install went perfectly. However, when I rebooted, the system
  showed a console with the error: "error: no video mode activated."
  instead of a prompt for the LVM encryption password. I left it for
  awhile with no change.  At this point, I simply typed in the password
  for the LVM encryption, and the system then continuted to boot
  normally.

  To try something out, I pushed the down arrow key, this caused the
  size of the console text to change, and also output the prompt for the
  LVM password (with two astricks '*' as if the single down arrow had
  typed two keys).  I tried pushing the down arrow again, and got a KDE
  themed GUI for entering the LVM encryption password, this time with 4
  astricks filled in.  Pushing the arrow key further cycled between the
  console and GUI, each time adding two more astricks.  I was able to
  use the backspace button to clean out the prompt and enter my
  password.

  After getting into the system, I tested it (everything was working
  fine) then rebooted. I experienced the same symptoms (just a blank
  screen) after each boot.

  There is a workaround to this bug (press the down arrow), however, you
  can't exactly look it up if you're stuck during the boot process.

  The hardware profile for this machine can be found here:
  http://teeks99.com/keep/lab_hwprofile.html

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