If screen is turned off or locked cannot recover live session

[Doug McMahon]

Test case1:
Boot to live session, let screen be turned off (default is 5 min, or lower to 1 min. in system settings
What happens: once screen is turned off nothing can turn it back on, nor are any key presses useful

Test Case 2:
Boot to a live session, go super+L
What happens: screen goes black, then grey. Again there is nothing to be done to recover session nor anything else

In both cases a hard shutdown is required.

This is on a -
Machine: System: HP product: HP Pavilion Notebook v: Type1ProductConfigId
           Mobo: HP model: 80A4 v: 91.19 Bios: Insyde v: F.54 date: 09/22/2015
CPU: Dual core Intel Core i7-6500U (-HT-MCP-) speed/max: 463/3100 MHz
Graphics: Card-1: Intel Sky Lake Integrated Graphics
           Card-2: NVIDIA GM108M [GeForce 940M]
           Display Server: X.Org 1.17.3 drivers: intel (unloaded: fbdev,vesa)
           Resolution: 1920x1080@60.02hz
           GLX Renderer: Mesa DRI Intel HD Graphics 520 (Skylake GT2)
           GLX Version: 3.0 Mesa 11.1.1

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: casper 1.366
ProcVersionSignature: Ubuntu 4.3.0-7.18-generic 4.3.3
Uname: Linux 4.3.0-7-generic x86_64
ApportVersion: 2.19.4-0ubuntu1
Architecture: amd64
CasperVersion: 1.366
CurrentDesktop: Unity
Date: Thu Jan 28 02:35:12 2016
LiveMediaBuild: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160125)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: casper
UpgradeStatus: No upgrade log present (probably fresh install)

[Mikemecanic (ppas)]

There is one way to get out of there but you need a HP keyboard. You just have to press the sleep mode key and monitor will wake-up after you press any key. Was able to reproduce the bug only once by pressing Super+L on Gnome Xenial on Kernel 4.5. This is an old bug for me and I get rid of that 10 times out of 10 with sleep mode key.

[Doug McMahon (mc3man)]

Seems no longer an issue or only on some hardware, in case of later then hardware specific report would be better