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I'm new user of Linux instead of Windows. I'm using Xubuntu 16.04, I installed the viber on my computer, but it does not work. I download file viber.deb from http://viber.com, and install it at the command : sudo dpkg-i viber.deb When I run the application

/opt/viber/Viber

This is the error message:

This application failed to start because it could not find or load the Qt platform plugin "xcb".
Available platform plugins are: eglfs, minimalegl, minimal, linuxfb, offscreen, wayland-egl, wayland, xcb.
Reinstalling the application may fix this problem.
Aborted (core dumped)
Nguyen Anh
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    Have you installed something Qt related? How do you installed Viber? –  Oct 18 '16 at 09:45
  • I download file viber.deb from http://www.viber.com/, and install it at the command : sudo dpkg-i viber.deb – Nguyen Anh Oct 18 '16 at 09:49
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    So, 1. should we assume you didn't install anything Qt related prior to installing Viber? And 2. Is your system fully updated? sudo apt update && sudo apt full-upgrade –  Oct 18 '16 at 09:53
  • OK, I'm running the update command. I will check back later when completed. – Nguyen Anh Oct 18 '16 at 10:03
  • update has finished. And the problem is still not solved. :D – Nguyen Anh Oct 18 '16 at 10:29
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    We still don't have a clear "yes" or "no"re: Qt. Anyway, something to try before reinstalling is to delete the Viber profile (look for a hidden folder .Viber). –  Oct 18 '16 at 10:39
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    Does running sudo apt-get install xcb solve it? – terdon Oct 18 '16 at 11:36
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    @terdon I just tested in 16.04, installed and run fine. No xcb installed before and after so it seems xcb isn't required? What bugs me is this being a Qt related error. –  Oct 18 '16 at 11:52
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    @CelticWarrior yeah, that was just the first hit for xcb. Actually, these seem like far better candidates. If you've managed to install, could you check the output of dpkg -l | grep '^ii.*libxcb' and report which one(s) you have installed? – terdon Oct 18 '16 at 11:57
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    @terdon http://pastebin.com/tjDY31aa –  Oct 19 '16 at 00:02
  • I found out how to fix this problem. Had to install libqt5gui5: sudo apt-get install libqt5gui5 and then re-install Viber. Thank you very much everyone. – Nguyen Anh Oct 20 '16 at 05:39
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    @NguyenAnh could you please post that as an answer and accept it so the question can be marked as answered? – terdon Oct 20 '16 at 08:33

2 Answers2

6

Try to run it with option %u like

/opt/viber/Viber %u
zx485
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Oleksandr H.
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5

I found out how to fix this problem.
Had to install libqt5gui5: sudo apt-get install libqt5gui5
and then re-install Viber.

Nguyen Anh
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