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[Launchpad Bug Tracker <1322769@xxxxxxxxxxxxxxxxxx>]

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I have replicated this bug on two different laptops, one at work running
mulitple monitors, one at home running a single monitor.

Symptom: When the Unity System Settings Lock Screen Settings activate,
and I notice the screen has gone blank and locked, I re-activate the
keyboard (usually left CRTL) and the 14.04 LTS Login Screen appears.

In all cases the keyboard is locked out and non-responsive, I can click
on the password box for my account and anything I type no longer
appears. I have to select "Switch Account" option with the mouse to get
a new login screen for my account and I can log in.

In some cases both the keyboard and the mouse input is locked out and
non-responsive. I can not select "Switch Account" and must power off the
laptop which of course is dangerous for the file systems of both Windows
VMs that are running and the host/14.04 LTS file system.  I have already
corrupted the Windows VM file systems and had to repair while testing
this bug for repeatability.

Both laptops run the AMD64 version of Ubuntu 14.04 LTS.
Both have built in Intel Integrated Graphics, one laptop with the older Ironlake, one with the newer ivy bridge.

Both are running Oracle VirtualBox but different version:

1. Home is running the Ubuntu 14.04 Repository version of Oracle VirtualBox (Currently 4.3.10_Ubuntu r93012)
2. Work is running the Oracle downloadable AMD64 version of Oracle VirtualBox Currently 4.3.12
3. Both have the respective Oracle Virtual Box Extensions installed for 4.3.10 and 4.3.12
3. Both are running Windows 7 64 VMs

Both 14.04 LTS have the following System Settings for Lock Screen:
Brightness slider - All the way left
Dim screen to save power - Checked
Lock - Switch to ON position
Lock Screen after: 5 minutes
Require my password when weking form suspend - Checked


I have tested this with both a VM running (no other running applications were tested) and with no apps running (fresh boot and login into 14.04 LTS unity desktops).

1. On fresh boot with no apps running the lock screen activates (after 5
min of no activity) and when I re-activate the laptops (usually pressing
left CTRL on keyboard) I get the login screen and can enter my password
successfully and the Unity desktop is presented.

2. On fresh boot with a Windows 7 VM running the lock screen activates
(after 5 min of no activity) and when I re-activate the laptops (usually
pressing the left CTRL on the keyboard) I get the login screen and the
keyboard is locked and non-responsive and I can not log into my account.

Variations on 2. I can not enter password but I can use CTRL-ALT-F1, etc. to switch to TTY and gain access to system.
Variations on 2. I can not enter password and can not use CTRL-ALT-F1, etc. the entire keyboard appears locked out, but I can use mouse and select Switch Account to force a new login screen to appear and the keyboard now works to enter password.
Variations on 2. I can not enter password and can not use CTRL-ALT-F1, etc. and I can not use the mouse, the entire input interfaces appear locked out and I have to power off the laptops to restart and be able to log in to Unity again.

If I turn Lock: Off but leave Turn Screen off when inactive for 5
minutes set. If I have a VM running or no apps running, after 5 minutes
the screen dims. I re-activate the system by pressing a key on the
keyboard (usually the left CTRL key) and the Unity desktop re-appears.

This bug only seems to occur when the Lock/Require Password when waking
from suspend is active.

** Affects: unity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: 14.04 bot-comment keyboard lock lts unity virtualbox
-- 
14.04 LTS AMD64 Password/Keyboard Lockup after Unity Lock Timeout with VirtualBox VMs Running
https://bugs.launchpad.net/bugs/1322769
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