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[Piotr Piwonski <1502055@xxxxxxxxxxxxxxxxxx>]

I've applied workaround and till now the issue did not appear. 
I've removed from /etc/default/grub options spash and quiet from the GRUB_CMDLINE_LINUX_DEFAULT.  
used: # sudo update-grub to apply changes and now the "nice" screen promping for password is not showing up. The issue also is not appearing. 

I've notice that when I removed that option temporary by editing GRUB
options during start (via e) I did not hit this issue.

This would indicate that the problem is with the graphical env for the
crypt screen. Not sure if this will help anyone but this is what I've
got.


Regards,
Peter

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https://bugs.launchpad.net/bugs/1502055

Title:
  Crypt password screen not responding

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Hi,

  During booting of system when the password screen for a encrypted device is presented there is no response.
  The screen is not accepting any input.
  I can switch to another screen using ctrl+alt+F# key and see blinking cursor.
  Switching back to ctrl+alt+F7 is showing message and all entered keys on screen.

  Rebooting by ctrl+alt+del or power button causes that the system boots
  to a text version of that screen where I can enter the password and
  system boots to OS.

  Not sure what could be gathered during this event to assist in
  identifying the problem since I have no possibility to get any logs
  and decrypt the disk :(

  Regards,
  Peter

  
  Just to add when the password screen is "hung" and I switch to different screen and back to F7 I see this message: 
  starting version 219

  The same is visible when second boot is going. However this time I'm
  pushed to text based version where no problem is visible

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