Comment 11 for bug 1446504

Thanks for your follow up Christopher

$ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
X200MA.504
11/13/2014

The advanced side of LP#1416849 is that the identification of the kernel working and new not working is done there. (thanks to exercises made on kernel-fixed-upstream tags side)

I'm not sure why you want to work on 3 bugs thread for same issue? And also I don't understand why you don't confirm that bug? There is indeed more that one person affected isn't?

Installing a fresh image of a LTS 14.04.2 is installing 3.16 kernel base and that "LTS 14.04.2 3.16" is working. no black/white screen issue.

The laptop having issue reported in this thread (and other thread) are installed from LTS 14.04.2 having kernel (point release? ) stuck to 3.13

doing an apt-get update & disp-upgrade don't update that laptop from 3.13 to 3.16.

I believe the solution for my issue is to found the best way to upgrade my laptop(s) from 3.13 to 3.16 while staying on a real LTS 14.02.x release.

doing:
sudo apt-get install --install-recommends linux-generic-lts-utopic xserver-xorg-lts-utopic libgl1-mesa-glx-lts-utopic libegl1-mesa-drivers-lts-utopic
from https://wiki.ubuntu.com/Kernel/LTSEnablementStack

resolve the situation since it move to

GNU/Linux
Description: Ubuntu 14.04.2 LTS
Release: 14.04
Codename: trusty
Linux Lux1-Ops-LiloXX 3.16.0-36-generic #48~14.04.1-Ubuntu SMP Wed Apr 15 13:11:28 UTC 2015 x86_64 x86_64 x86_64

But I'm not sure it is what I want/ the best option.

So, so far for me, Ubuntu 14.04.2 LTS installed prior to 3.13.0-44 are working, the problem appeared with 3.13.0-45 update of that Ubuntu 14.04.2 LTS
and new installation of Ubuntu 14.04.2 LTS is based on 3.16.x that is working.

I was not aware of such variation between same LTS regarding point release. Maybe I need to understand how to move a distribution from one point release to the next one.