After installing viber (version 13.3.1) from official debian package viber won't start normally.

Viber is installed using dpkg command:

$ dpkg -i viber.deb

When viber is started, main window is not showing, instead it shows transparent window as shown below:

viber window transparent

I've found solution and wanted to share in case someone else bumps into this.

  • 1
    FYI: Xubuntu 16.04 LTS being a flavor of Ubuntu had only 3 years of supported life (fridge.ubuntu.com/2019/03/01/ubuntu-16-04-6-lts-released) which ended 2019-April. Ubuntu 16.04 LTS Server (no desktop) or Desktop (Unity 7) have 5 years of supported life and are still supported. Refer release notes, or use ubuntu-support-status or your own system to confirm this is the case. I suggest you move to a supported release of Lubuntu for security reasons, unless you're off-line or are aware of risks.
    – guiverc
    Dec 9, 2020 at 0:06
  • Thanks for the info, thought that Ubuntu flavors are supported for 5 years also. I am using Linux Mint Xfce 18.3 as my daily driver but definitely good to know.
    – nexayq
    Dec 9, 2020 at 0:42
  • No, only 'main' packages have security updates for 5 years, not flavors (eg. if you read Xubuntu's site xubuntu.org/release/16-04 it reports EOL April-2019). It's always been this way, the 'main' repository only was extended for five years (Ubuntu thus doesn't have 'universe' or non-5 year packages included or enabled on install). Mint has a lower security model than Ubuntu does... they sort of have to given their use of run-time adjustments to tweak foreign (Ubuntu) packages. For the 16.04 cycle Ubuntu Kylin 16.04 was given 5 years of life (once-off). Always check release notes
    – guiverc
    Dec 9, 2020 at 0:49
  • 1
    Thank you for sharing your findings though & helping any remaining Xubuntu 16.04 users (there will still be some..).
    – guiverc
    Dec 9, 2020 at 1:01
  • Thank you for helpful comment
    – nexayq
    Dec 9, 2020 at 1:04

1 Answer 1


Viber is using Qt5 framework.

One of the Qt plugins is causing issues with the viber application: namely

We should replace this library with the library provided with our distribution as shown below:

$ cd /opt/viber/plugins/xcbglintegrations/
$ mv libqxcb-glx-integration.so libqxcb-glx-integration_bkp.so
$ ln -s /usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so

Now viber should work normally.

This solution can also be helpful for other Qt applications.
Same fix can be applied for the zoom application (tested).

Tested on:
Xubuntu 16.04
Linux Mint Xfce 18.3

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