Im using Ubuntu 16.04.2 together with mendeley. When I want to start mendeley by clicking on the launcher icon, nothing happens. Launching mendeleydesktop via shell leads to:

QSslSocket: cannot resolve SSLv2_client_method
QSslSocket: cannot resolve SSLv2_server_method

The strange thing is, when I do ps -e | grep mendel the output shows two processes:

pid1    install-mendele <defunct>
pid2    mendeleydesktop

where pid2 = pid1+1. The first process most probably is


When I kill both processes manually, mendeley starts again. Does anyone know, how to solve that?

2 Answers 2


There are some missing libraries, it seems. On Debian Stretch, I had to:

sudo apt-get install libssl1.0-dev

Had the same problem. Solved by just killing the remaining mendeleydesktop process.

pkill mendeleydesktop
  • Well I mentioned that in the OP.
    – Dschoni
    Feb 2, 2018 at 10:26

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