I too am experiencing this issue when using:
Ubuntu 18.04.2 LTS
Gnome 3.28.2
Mouse moves but unable to click anything for a minute or two.
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Desktop Bugs, which is subscribed to gnome-shell in Ubuntu.
Also affecting my Ubuntu 16.04 LTS laptop, all updates installed.
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Desktop Bugs, which is subscribed to gdm3 in Ubuntu.
https://bugs.launchpad.net/bugs/1532508
Title:
Screen contents revealed briefly on resume, before
Opened bug report at GNOME as suggested above, link as follows:
https://bugzilla.gnome.org/show_bug.cgi?id=758955
** Bug watch added: GNOME Bug Tracker #758955
https://bugzilla.gnome.org/show_bug.cgi?id=758955
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Desktop
** Package changed: ubuntu = gnome-control-center (Ubuntu)
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https://bugs.launchpad.net/bugs/1161065
Title:
HP G56-1065A Laptop external display not