Background:
I have a 2008 HP 2133 Mini-note PC laptop running Ubuntu 14.04.5 with the Gnome Flashback desktop environment. A hardware summary is given below. In normal useage, I run the machine with an external display, external keyboard, and external mouse via a Netgear GCS1724 KVM switch.
I have been delaying the upgrade to 16.04 because of previous upgrade difficulties and because of the age of the machine (~11 years). The upgrade software for 14.04 would not run...