I'm running Ubuntu 14.10 with the system disk encrypted with luks. When I start the computer, it shows the Ubuntu logo and asks to enter the password to unlock the disk. However, I cannot enter the password. Nothing happens if I type the password and hit Enter. However, I can hit Ctrl + Alt + Del to restart the computer. The only way to start the computer at the moment is to use the recovery mode.
Any ideas?
I have the same problem. It seems to be an issue with Plymouth not capturing keyboard input, at this step in the boot process
Work Around: update boot parameters in /etc/default/grub and change splash to nosplash. After that you can run update-grub and you will get a console based password prompt instead of the Plymouth one. Not as pretty, but it's doesn't require gyrations to boot.
Diagnostic Synopsis: If I hit Ctrl + Alt + F1 then Ctrl + Alt + F7, the Plymouth graphic screen disappears and it brings me back to a black screen where I can see the text I type echoed, but it doesn't accept the input to unlock the drive.
I share the same problem.
I found the following solution: At splash screen it is not possible to enter the password. If I type ESC to display textual console, it is possible to unlock the disk with the password.
Here is my solution: http://realtechtalk.com/LUKS_unable_to_type_password_to_unlock_during_boot_on_Debian_Ubuntu_and_Mint-2226-articles
What I found is that after a kernel update that I couldn't type the LUKS password. In my experience it is usually caused by not having the "extra" kernel modules installed. Even if you use quietboot or Esc to enter the password, you may find your system is still broken after booting due to missing other "extra" modules that you were using.
I had the same problem.
The solution I found was to add nomodeset to the kernel parameters. My kernel parameters ended up looking like ro quiet splash nomodeset $vt_handoff
After booting normally, I used Grub Customizer to change the parameters for every boot.
