after fresh install with encrypted lvm system refuses to get past grub

[scottrobbertson]

system loads grub and allows menu selection, but then goes to a blank screen with cursor and no password prompt

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: grub (not installed)
ProcVersionSignature: Ubuntu 4.3.0-2.11-generic 4.3.0
Uname: Linux 4.3.0-2-generic x86_64
ApportVersion: 2.19.2-0ubuntu9
Architecture: amd64
CasperVersion: 1.366
CurrentDesktop: KDE
Date: Fri Dec 11 01:32:26 2015
LiveMediaBuild: Kubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20151209)
SourcePackage: grub
UpgradeStatus: No upgrade log present (probably fresh install)

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1525044

[sudodus (nio-wiklund)]

Maybe this bug is somehow related to Bug #1530548

'passphrase for encrypted disk is not shown'

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Brian Murray (brian-murray)]

A good way to test if it is in fact a duplicate seems to be using the arrow keys when you see the blank screen.

[Phillip Susi (psusi)]

Indeed, press alt + left/right arrow to cycle through the ttys and see if you come across the password prompt.

[Launchpad Janitor (janitor)]

[Expired for grub (Ubuntu) because there has been no activity for 60 days.]