UEFI Grub Encryption Screen Unresponsive

[Larry Dewey]

After upgrading to Ubuntu Mate 16.04 LTS, I restarted my computer and came to the screen that prompts for a password, and found that I was unable to insert anything. The screen was completely unresponsive. I was able to press ctrl + alt + delete to restart the computer, but now the only way I can get into Ubuntu is by booting into recovery mode, and then by selecting continue. I get a text screen to input my encryption password, and then I am able to access my system.

System Specs:

 | System 76 Lemur|
+------------------------+
14.1" Matte 1080P IPS LED Backlit Display
Intel HD Graphics 520 ( Skylake )
3.1 GHz i7-6500U ( Skylake )
16 GB DDR3 1600 MHz
256 GB Samsung PCIe NVMe

[Larry Dewey (larry-j-dewey)]

A temporary work around is to disable the splash screen and "quiet."

Edit /etc/default/grub (using gksu gedit /etc/default/grub), and remove the "quiet splash" from the Linux command line.

After this run sudo update-grub2