When I start Teamviewer on Ubuntu 18.04 64 bit I get : mae@HP-Compaq-6715b:~$ teamviewer Init... CheckCPU: SSE2 support: yes Checking setup... Launching TeamViewer ... Launching TeamViewer GUI ... Aborted (core dumped) mae@HP-Compaq-6715b:~$ I looked at my logs and saw this: in the gui.log: This application failed to start because it could not find or load the Qt platform plugin "xcb" in "". Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, xcb, dxcb, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx. Reinstalling the application may fix this problem. I reinstalled both the qt5 teamviewer plugins AND Teamviewer 14 with no change.
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