[Bug 1386005] Re: Password not accepted graphical boot for encrypted root system

[FrancisL]

I have the same issue on a desktop
Intel i5 4th gen
NVidia GTX970


I have a fresh Install Ubuntu with encryption. By default it uses Nouveau Driver

>From the driver UI, I switch to nvidia, then I reboot and the problem
appear.

Scenarios

1. default kernel loading
It prompt with a low res screen and the disk decryption password doesn't work.
When I type nothing is shown. If I switch terminal with CTRL+ALT+F6 then CTRL+ALT+F7, I can see the password in clear Text and it doesn’t reload the UI

2. Most Recent kernel with (Upstart)
same as default

3. Most Recent kernel Recovery 
Enter password in text mode
When Prompt, select "Resume normal boot"
Works fine

4. Previous Kernel (default)
Ask GUI disk password and work fine

5. Previous Kernel Upstart
Ask disk password and hangs there

6. Pervious Kernel Recovery
same as 3 but stock in 1024x768 res

I made the following changes :
GRUB_GFXMODE=2560x1440
GRUB_GFXPAYLOAD_LINUX=keep
GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash noplymouth”

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https://bugs.launchpad.net/bugs/1386005

Title:
  Password not accepted graphical boot for encrypted root system

Status in plymouth package in Ubuntu:
  Triaged

Bug description:
  After upgrading to 14.10 from 14.04, I am unable to enter my password for decypting the root filesystem.  The password is echoed in plaintext on the  graphic boot screen and does not show up in the password entry box  on the graphic.   In order to boot the system, I have to boot in recovery mode and enter the password during the text mode boot.  This problem was also described by another user in problem# 1385027.   I did not have a probem in 14.04.   I am using nvidia drivers.   I am set to resolution 1920x1200.  I am running module uvesafb with changes to /etc/default/grub for the module and resolution.  I assume this is a plymouth package bug but am not positive.
  --- 
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  CurrentDesktop: Unity
  DefaultPlymouth: /lib/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth
  DistroRelease: Ubuntu 14.10
  InstallationDate: Installed on 2014-04-21 (189 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: Dell Inc. Latitude E6500
  NonfreeKernelModules: nvidia
  Package: plymouth 0.9.0-0ubuntu7
  PackageArchitecture: amd64
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     no card
  ProcCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-37-generic root=/dev/mapper/hogwarts_vg-root ro recovery nomodeset
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-37-generic root=/dev/mapper/hogwarts_vg-root ro recovery nomodeset
  ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7
  Tags:  utopic
  TextPlymouth: /lib/plymouth/themes/ubuntu-text/ubuntu-text.plymouth
  Uname: Linux 3.13.0-37-generic x86_64
  UpgradeStatus: Upgraded to utopic on 2014-10-23 (4 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 12/06/2011
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A27
  dmi.board.name: 0PP476
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA27:bd12/06/2011:svnDellInc.:pnLatitudeE6500:pvr:rvnDellInc.:rn0PP476:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: Latitude E6500
  dmi.sys.vendor: Dell Inc.

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