[Bug 1574317] [NEW] Prompt to decrypt LVM device is hidden behind (blank) splash screen

[Ethan Blanton]

Public bug reported:

After updating from 15.10 to 16.04, the passphrase prompt to decrypt my
LVM disk is not presented when the boot splash screen is enabled.  The
bluish background is drawn and then the boot hangs indefinitely, waiting
for the passphrase to be typed with no on-screen indication of such.
Typing the passphrase and pressing enter continues to boot normally.
Booting with 'nosplash' on the command line shows a text-mode passphrase
prompt that works normally.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: cryptsetup 2:1.6.6-5ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
Date: Sun Apr 24 11:42:33 2016
InstallationDate: Installed on 2015-06-04 (324 days ago)
InstallationMedia: Lubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
SourcePackage: cryptsetup
UpgradeStatus: Upgraded to xenial on 2016-04-22 (1 days ago)
crypttab: sda3_crypt UUID=ad243744-ddc3-4839-b492-5ede0ec8aecc none luks,discard

** Affects: cryptsetup (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug xenial

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https://bugs.launchpad.net/bugs/1574317

Title:
  Prompt to decrypt LVM device is hidden behind (blank) splash screen

Status in cryptsetup package in Ubuntu:
  New

Bug description:
  After updating from 15.10 to 16.04, the passphrase prompt to decrypt
  my LVM disk is not presented when the boot splash screen is enabled.
  The bluish background is drawn and then the boot hangs indefinitely,
  waiting for the passphrase to be typed with no on-screen indication of
  such.  Typing the passphrase and pressing enter continues to boot
  normally.  Booting with 'nosplash' on the command line shows a text-
  mode passphrase prompt that works normally.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: cryptsetup 2:1.6.6-5ubuntu2
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Sun Apr 24 11:42:33 2016
  InstallationDate: Installed on 2015-06-04 (324 days ago)
  InstallationMedia: Lubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  SourcePackage: cryptsetup
  UpgradeStatus: Upgraded to xenial on 2016-04-22 (1 days ago)
  crypttab: sda3_crypt UUID=ad243744-ddc3-4839-b492-5ede0ec8aecc none luks,discard

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