After resume from suspend, could not enter password to unlock

[Thomas Novin]

I could move the mouse but not enter a password, it was just like the keyboard was dead. Switched to vt8 I got a login to another users session. I could type in the password box there. Then back to vt7 and I was able to enter the password to unlock.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: lightdm 1.9.13-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-19.40-generic 3.13.6
Uname: Linux 3.13.0-19-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Mar 30 16:26:34 2014
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-03-28 (2 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326)
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)

[Thomas Novin (thomasn80)]

Same problem again, this time, I could not get vt7 to work at all. Could switch to vt8 and login with another user but vt7 was "dead". Had to reboot to fix.

[Launchpad Janitor (janitor)]

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

[Omar Abdallah Shaaban (omars)]

Same here. I am able to get around the bug by doing another suspend, then wake up. After this one, the keyboard works.

[Nicolas Labrada (nlabrad)]

Can confirm, happening also in arch Linux with whatever greeter I choose. Can't input after second suspend either.
I just get no input screen and the cursor is not present until I move it or press any key. It just flashes with interaction and goes away.