How to install Synergy 2.0.12 beta on Ubuntu 20.04 (Focal Fossa) LTS

install-synergy2-focal.sh

#!/usr/bin/env bash
set -Eeuo pipefail

# Download the Synergy 2 beta installer for Ubuntu 16.04 to /tmp.

cd /tmp
sudo dpkg-deb -R synergy_2.0.12.beta_b1705+e5daaeda_amd64.deb synergy_2.0.12.beta
sudo mv synergy_2.0.12.beta/usr/lib/systemd/system/synergy.service synergy_2.0.12.beta/usr/lib/systemd/system/synergy.service.dpkg-new
# Renaming the desktop file might not be necessary.
sudo mv synergy_2.0.12.beta/usr/share/applications/synergy.desktop synergy_2.0.12.beta/usr/share/applications/synergy.desktop.dpkg-new
sudo dpkg-deb -b synergy_2.0.12.beta synergy_2.0.12.beta-ubuntu-20.04.deb
wget http://archive.ubuntu.com/ubuntu/pool/main/o/openssl1.0/libssl1.0.0_1.0.2n-1ubuntu5.3_amd64.deb
sudo dpkg -i libssl1.0.0_1.0.2n-1ubuntu5.3_amd64.deb
sudo apt-get install ./synergy_2.0.12.beta-ubuntu-20.04.deb
synergy-config

The libssl1 package has changed from 5.3 to 5.4. When considering this it works great!

libssl1 changed to 5.5 now.

Running synergy-config prints an error in the console and I can't log in:

$ synergy-config 
"[ Config  ] " "[2021-01-14T08:45:39] debug: install dir: /usr/bin" 

"[ Config  ] " "[2021-01-14T08:45:39] info: log filename: /var/log/synergy/synergy-combined.log" 

QObject::startTimer: Timers cannot have negative intervals
"[ Config  ] " "[2021-01-14T08:45:39] warning: version check disabled, skipping" 

"[ Config  ] " "[2021-01-14T08:45:39] debug: connecting to background service" 

"[ Config  ] " "[2021-01-14T08:45:39] debug: connected to background service" 

"[ Config  ] " "[2021-01-14T08:45:39] debug: sending uid to service: 1000" 

"[ Config  ] " "[2021-01-14T08:45:39] debug: saying hello to background service" 

qrc:/ActivationPage.qml:65:21: QML Image: Binding loop detected for property "sourceSize.height"
"[ Config  ] " "[2021-01-14T08:45:39] warning: version check disabled, skipping" 

"" "[ Service ] [2021-01-14T08:45:39] debug: saying hello to config ui" 

"" "[ Service ] [2021-01-14T08:45:39] info: Tray process connected" 

"" "[ Service ] [2021-01-14T08:45:39] info: A tray process is already connected. Sending kill command." 

"[ Config  ] " "[2021-01-14T08:45:40] error: Reply status code: 0" 

"[ Config  ] " "[2021-01-14T08:45:40] error: failed to check update: reply has error: SSL handshake failed" 

^ Were you able to get that fixed? Same issue. @jpmeijers

I contacted Synergy support, as I paid for a license. They said Synergy2 is discontinued and that one should use Synergy1. They moved my v2 license to v1. So now I am using Synergy1.

Honestly, at this point I'm done with Synergy. They've taken an free/libre/open source software package closed source, and they've bungled it pretty badly. They aren't getting another penny from me.