Intel NUC5CPYH - dual mouse pointer display when booting with two screens

[Mircea Balog]

Issue Description
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- two mouse pointers on screen on booting with on dual monitor setup, One behave normally second is stuck just animate synchronously with first one.
- The presence of second mouse pointer results in mouse pointer trailing artifacts and screen artifacts under mouse pointer, rendering desktop unusable.
- On Ubuntu Mate the second mouse pointer appear on a screen edge, and on Regular Ubuntu it appear somewhere on one of the two screens.

Affected Systems
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- Tested on Both Ubuntu Mate and regular Ubuntu, both version 19.10 and 20.04

Issue reproduction
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- booting with two monitors connected on affected system,
(connecting second monitor after login screen -lightdm greeter ... - will prevent issue appear)

Workarounds
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- booting with only one monitor connected, and connect the second one later after log-in screen appear.
- on booting with two monitors on Ubuntu Mate: Disabling Marco - Adaptive compositor to "No Compositor" will solve pointer trailing and screen artifacts, (but the second mouse pointer remain outside screen.

Note
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This system also has another mouse pointer bug
https://bugs.launchpad.net/ubuntu-mate/+bug/1866452

[Mircea Balog (bmir)]

Just tested on Ubuntu Mate 20.04.4 and
- second mouse pointer still present on the right edge of the second screen, centered vertically (almost outside of screen just 2-3 pixel inside) as before, no change.
- it looks like the artifacts on current mouse pointer no longer present, (not tested enough time, as artifacts does not appear always immediately)

I do not use this system anymore for desktop use for more testing (is more like a mobile file server and occasional mobile desktop use)

I will upgrade lo latest Ubuntu Mate and return with checking

[Mircea Balog (bmir)]

Issue still present on 22.04 current beta version (upgrade from 20.04)