[Bug 869119] Re: screen goes blank before showing password prompt (inteldrmfb, cryptsetup)

[private_lock]

- does hitting 'esc' once instead of Alt+F6/Alt+F7 fix the issue?
Yes - I get a text-only password prompt

 - does hiting 'esc' *twice* fix the issue?
Yes - I see the graphical password prompt (= GPP)

 - does hitting Alt+F7 *without* hitting Alt+F6 fix the issue?
No - screen switches to powersave (no backlight) but accepts password typed blindly

 - what do you see if you boot without the 'quiet' option (but still with the 'splash' option)?
Depends on how, I remove the quiet:
a) If I trigger the grub boot menu, I always correctly get the GPP invariant of quiet or not quiet
b) Removing quiet from /etc/default/grub and running update-grub still leaves me with the screen in powersave

This machine is a notebook, originally installed with either oneric or
natty alternate CD and updated up to quantal without reformating the
hard-disk since.

** Attachment added: "plymouth-debug.log"
   https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/869119/+attachment/3511852/+files/plymouth-debug.log

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https://bugs.launchpad.net/bugs/869119

Title:
  screen goes blank before showing password prompt (inteldrmfb,
  cryptsetup)

Status in “initramfs-tools” package in Ubuntu:
  Fix Released
Status in “initramfs-tools” source package in Oneiric:
  Fix Released
Status in “initramfs-tools” source package in Precise:
  Fix Released

Bug description:
  SRU justification: late-cycle regression that causes users who have
  encrypted root filesystems configured to be unable to see the password
  prompt with certain hardware, unless they switch VTs to toggle the
  video mode.

  TEST CASE:
  1) install a system with an encrypted root filesystem using the 11.10 alternate or server ISO.
  2) verify that on affected, KMS-capable hardware, the passphrase prompt is not displayed at boot, but that it is displayed if you hit Alt+F6 followed by Alt+F7.
  3) install initramfs-tools 0.99ubuntu8 from oneiric-proposed
  4) reboot 10 times on the affected machine, and verify that the passphrase prompt is correctly shown in each case.
  5) verify that with this version of initramfs-tools installed and cryptsetup and nvidia-current packages installed on nvidia-capable hardware, that there is no regression in the display of the plymouth splash screen at boot time vs. the previous version of initramfs-tools.

  When booting the plymouth splash screen is shown for a second and then the screen goes blank.
  I have an encrypted the root partition so this makes it a bit difficult to input the password.
  Entering the password after some time when the screen is blank works fine though.

  Switching the VT with ctrl+F6, ctrl+F7 shows the plymouth password
  promt again but it's very distorted.

  Possibly a duplicate of bug #816267

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: plymouth 0.8.2-2ubuntu28
  ProcVersionSignature: Ubuntu 3.0.0-12.19-generic 3.0.4
  Uname: Linux 3.0.0-12-generic x86_64
  ApportVersion: 1.23-0ubuntu2
  Architecture: amd64
  Date: Thu Oct  6 14:14:21 2011
  DefaultPlymouth: /lib/plymouth/themes/kubuntu-logo/kubuntu-logo.plymouth
  InstallationMedia: Kubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427)
  MachineType: Dell Inc. Vostro 1320
  ProcCmdLine: BOOT_IMAGE=/vmlinuz-3.0.0-12-generic root=/dev/mapper/root ro quiet splash vt.handoff=7
  ProcEnviron:
   LC_TIME=de_DE.UTF-8
   LANGUAGE=
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/zsh
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.0.0-12-generic root=/dev/mapper/root ro quiet splash vt.handoff=7
  SourcePackage: plymouth
  TextPlymouth: /lib/plymouth/themes/kubuntu-text/kubuntu-text.plymouth
  UpgradeStatus: Upgraded to oneiric on 2011-07-04 (93 days ago)
  dmi.bios.date: 03/05/2010
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A08
  dmi.board.name: 0T052J
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnDellInc.:bvrA08:bd03/05/2010:svnDellInc.:pnVostro1320:pvrNull:rvnDellInc.:rn0T052J:rvr:cvnDellInc.:ct8:cvrN/A:
  dmi.product.name: Vostro 1320
  dmi.product.version: Null
  dmi.sys.vendor: Dell Inc.

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