In Debian Bookworm the installation is not possible because of libssl.

[Michael Taggatz 2]

mike@mpc4:~$ ~/hyfetch/env/bin/hyfetch
                                   mike@mpc4 
       _,met$$$$$gg.               --------- 
    ,g$$$$$$$$$$$$$$$P.            OS: Debian GNU/Linux 12 (bookworm) x86_64 
  ,g$$P"        "\""Y$$.".         Kernel: 6.1.0-9-amd64 
 ,$$P'              `$$$.          Uptime: 3 hours, 34 mins 
',$$P       ,ggs.     `$$b:        Packages: 2261 (dpkg) 
`d$$'     ,$P"'   .    $$$         Shell: bash 5.2.15 
 $$P      d$'     ,    $$P         Resolution: 1920x1200 @ 59.95Hz 
 $$:      $$.   -    ,d$$'         DE: MATE 1.26.0 (x11) 
 $$;      Y$b._   _,d$P'           WM: Metacity (Marco) 
 Y$$.    `.`"Y$$$$P"'              Theme: Menta [GTK2/3] 
 `$$b      "-.__                   Icons: menta [GTK2/3] 
  `Y$$                             Cursor: mate [GTK3] 
   `Y$$.                           Terminal: HyperTerm 
     `$$b.                         Terminal Font: Menlo 
       `Y$$b.                      CPU: AMD A10-7860K Radeon R7 4C+8G (4) @ 3.6GHz 
          `"Y$b._                  GPU: AMD ATI Radeon R7 Graphics 
              `"\""                Memory: 5.44 GiB / 14.57 GiB (37%) 
                                   Network: 1 Gbps 
                                   BIOS: American Megatrends Inc. 4.6 (12/24/2015) 

                                                           
                                                           

mike@mpc4:~$ sudo apt install ~/Downloads/synergy-linux_x64-libssl1.1-v3.0.72.1-rc1.deb 
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Note, selecting 'synergy' instead of '/home/mike/Downloads/synergy-linux_x64-libssl1.1-v3.0.72.1-rc1.deb'
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 synergy : Depends: libssl1.1 but it is not installable
E: Unable to correct problems, you have held broken packages.
mike@mpc4:~$ sudo apt install ~/Downloads/synergy_1.14.6-stable.455c59b4_debian11_amd64.deb 
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Note, selecting 'synergy' instead of '/home/mike/Downloads/synergy_1.14.6-stable.455c59b4_debian11_amd64.deb'
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 synergy : Depends: libssl1.1 (>= 1.1.0) but it is not installable
E: Unable to correct problems, you have held broken packages.

mike@mpc4:~$ sudo apt info libssl-dev
Package: libssl-dev
Version: 3.0.9-1
Priority: optional
Section: libdevel
Source: openssl
Maintainer: Debian OpenSSL Team <[email protected]>
Installed-Size: 12.6 MB
Depends: libssl3 (= 3.0.9-1)
Suggests: libssl-doc
Homepage: https://www.openssl.org/
Tag: devel::lang:c, devel::library, implemented-in::TODO, implemented-in::c,
 protocol::ssl, role::devel-lib, security::cryptography
Download-Size: 2428 kB
APT-Manual-Installed: yes
APT-Sources: http://deb.debian.org/debian bookworm/main amd64 Packages
Description: Secure Sockets Layer toolkit - development files
 This package is part of the OpenSSL project's implementation of the SSL
 and TLS cryptographic protocols for secure communication over the
 Internet.
 .
 It contains development libraries, header files, and manpages for libssl
 and libcrypto.

 

[Michael Taggatz 2]

Using flatpak, I was apparently able to successfully install a KDE version of Synergy 3 in Mate (genome 2). I cannot start the alleged installation.
 

mike@mpc4:~$ sudo flatpak install ~/Downloads/synergy-linux_x64-libssl3-v3.0.72.1-rc1.flatpak 
error: The application com.symless.synergy/x86_64/master requires the runtime org.kde.Platform/x86_64/5.15-22.08 which was not found
mike@mpc4:~$ flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo

Note that the directories 

'/var/lib/flatpak/exports/share'
'/home/mike/.local/share/flatpak/exports/share'

are not in the search path set by the XDG_DATA_DIRS environment variable, so
applications installed by Flatpak may not appear on your desktop until the
session is restarted.

error: Flatpak system operation ConfigureRemote not allowed for user
mike@mpc4:~$ sudo flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
mike@mpc4:~$ sudo flatpak install ~/Downloads/synergy-linux_x64-libssl3-v3.0.72.1-rc1.flatpak 
Required runtime for com.symless.synergy/x86_64/master (runtime/org.kde.Platform/x86_64/5.15-22.08) found in remote flathub
Do you want to install it? [Y/n]: 

com.symless.synergy permissions:
    ipc    network    x11    dri   file access [1]   dbus access [2]

    [1] host, xdg-config/kdeglobals:ro
    [2] com.canonical.AppMenu.Registrar, org.a11y.*, org.kde.KGlobalSettings, org.kde.kconfig.notify


        ID                                              Branch                  Op             Remote                      Download
 1. [?] org.freedesktop.Platform.GL.default             22.08                   i              flathub                     142.9?MB / 143.1?MB
 2. [?] org.freedesktop.Platform.GL.default             22.08-extra             i              flathub                      16.3?MB / 143.1?MB
 3. [?] org.freedesktop.Platform.openh264               2.2.0                   i              flathub                     887.4?kB / 944.3?kB
 4. [?] org.kde.Platform.Locale                         5.15-22.08              i              flathub                       2.0?MB / 354.9?MB
 5. [?] org.kde.Platform                                5.15-22.08              i              flathub                     395.4?MB / 323.9?MB
 6. [?] com.symless.synergy                             master                  i              synergy1-origin             0 bytes

Installation complete.

 

[Michael Taggatz 2]

After restarting my Bookworm Mate system, Synergy 3 is running. I'm not a fan of flatpak, but as a workaround I can live with it for now.

[jaimeCabra 0]

I also couldn't get the debian 11 .deb working on my bookworm install. The flatpak installs just fine, but I can't get it to connect. My linux host shows

`Note - connecting to 10.10.10.235` followed by `Warning - failed to connect to server: timed out`, while the windows computer 'server' says `network connected: ip: 10.10.10.173`. The IP addresses are correct. Any clues?

[jaimeCabra 0]

nevermind, my session was wayland and switching to x11 fixed everything. I would wish for wayland to be fully supported, it seems that so far the only thing I've given up is fractional scaling, but I do like fractional scaling.

[jpmiller 1]

Thanks so much to everyone in this thread - I had similar issues moving from Pop!_os to Bookworm after a recent harddrive failure and this thread was a life saver!

 

ps for anyone still on synergy1 - flatpak works there too.

[G0lg0thaZA 0]

I had the same issue installing Debian 11 version on Debian 12.
Thought I would give the Ubuntu 22 version a go, and was successful. Installed with `sudo dpkg -i <synergy-ubuntu-file-name>`
Could then configure it as per normal.

Hope it helps someone (or myself) in the future.