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I installed Ubuntu 18.04 updates on July 21st.  This was a relatively
small update with kernel related files from what I remember when
installing the update.  Since the update, my KVM connected Logitech G305
wireless mouse functionality is broken.  The KVM keyboard and display
still function correctly.

I have 2 computers (desktop and laptop) connected to a KVM switch.  The
2 computers are dual boot Ubuntu 18.04 and Windows 7 Pro.  This KVM
setup has worked since 2015 with versions of Linux Mint 17.x, Ubuntu
18.04, and Windows 7 Pro.

The KVM (ConnectPro 14+)

    • Has a video cable from each computer to the KVM
    • Has a USB control cable from each computer to the KVM
    • Has a video cable from the KVM to the display
    • Has a USB-to-PS/2 adapter connecting the KVM keyboard output to the PS/2 
keyboard
    • Has a KVM USB extension cable with the Logitech G305 wireless mouse 
receiver plugged into the USB connector.

The extension cable is used to locate the receiver in proximity to the
wireless mouse.

I updated Ubuntu on the desktop on July 21st.  Since the update, I have
lost wireless mouse functionality to the desktop.  But, I still have
functionality with Win 7 Pro, and with the Ubuntu 18.04 laptop that was
not updated.

KVM Wireless Mouse function matrix (see attached image)

I replaced the mouse battery, so that is not the problem.

I verified that a wired mouse and the wireless Logitech G305 mouse both
work properly when plugged directly into a USB port on the M83 desktop.

I replaced the wireless mouse with a wired mouse on the KVM mouse input,
and the 4 configurations above worked OK (including the desktop with the
July updates).

So, I think that the July 21st update broke some function(s) in the
handling of the wireless mouse USB controls signals between the desktop
computer and the KVM switch.

    1. Can I provide any additional configuration information, and, if so, what 
terminal commands should I run?
    2. How do I recover from this problem?
    3. Can I back-out the update?  If so, how will this impact future updates?
    4. What else can I try to restore the wireless mouse functionality?


Thank you in advance for your assistance.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.37
ProcVersionSignature: Ubuntu 5.4.0-42.46~18.04.1-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.15
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Mon Jul 27 14:29:36 2020
InstallationDate: Installed on 2020-03-18 (130 days ago)
InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
Symptom: dist-upgrade
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic dist-upg kvm mouserade
-- 
Ubuntu 18.04 Update Breaks KVM Wireless Mouse
https://bugs.launchpad.net/bugs/1889114
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