Partially applied incremental upgrades cause all kinds of trouble

multiple users reported that after an upgrade to 3.2, the mouse and keyboard are not working anymore in the greeter

we do not have a lot of data, but, even if it looks like #13576 (closed), other hardware are affected (Acer Aspire 1410, Asus Eee PC…)

To help debugging this, see #14754-note_2.

Original created by @goupille on 14754 (Redmine)

Edited Nov 22, 2019 by intrigeri

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