Gnome input devices hang

[Bodie Solomon]

I've noticed that occasionally my input devices (kb/mouse) will stop functioning. My music is still playing, so I don't think that the desktop is hanging, and I'm able to SSH into the machine. Triggering the Gnome GPG pinentry apparently caused it to become unstuck.

My Xorg.0.log is here: https://paste.ubuntu.com/p/nP7TDPFFKK/

I've previously been impacted by a bug that made my input and desktop hang after X login:

https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-390/+bug/1763774

It appeared to be resolved by switching to lightdm as in this bug:

https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-384/+bug/1705369

I haven't entirely ruled out a bad USB front panel connection or the hub it is attached with. If I identify that as the cause of the issue then I will close this bug.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xserver-xorg-video-nvidia-390 390.48-0ubuntu2
ProcVersionSignature: Ubuntu 4.15.0-15.16-generic 4.15.15
Uname: Linux 4.15.0-15-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu5
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sat Apr 14 12:53:31 2018
InstallationDate: Installed on 2017-10-30 (166 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
SourcePackage: nvidia-graphics-drivers-390
UpgradeStatus: No upgrade log present (probably fresh install)