[Pkg-virtualbox-devel] Bug#864924: virtualbox GUI not more working

[Francesco P. Lovergine]

Package: virtualbox
Version: 5.1.22-dfsg-1
Severity: grave

Dear Maintainer, the program fails to start with the following message:

$ LANG=C virtualbox

Qt FATAL: 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.

Reinstalling the application may fix this problem.


-- System Information:
Debian Release: 9.0
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-3-amd64 (SMP w/4 CPU cores)
Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8), LANGUAGE=it_IT.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages virtualbox depends on:
ii  adduser                               3.115
ii  init-system-helpers                   1.48
ii  libc6                                 2.24-11
ii  libcurl3-gnutls                       7.52.1-5
ii  libdevmapper1.02.1                    2:1.02.137-2
ii  libgcc1                               1:6.3.0-18
ii  libgsoap10                            2.8.35-4
ii  libpng16-16                           1.6.28-1
ii  libpython3.5                          3.5.3-3
ii  libsdl1.2debian                       1.2.15+dfsg1-4
ii  libssl1.1                             1.1.0f-3
ii  libstdc++6                            6.3.0-18
ii  libvncserver1                         0.9.11+dfsg-1
ii  libvpx4                               1.6.1-3
ii  libx11-6                              2:1.6.4-3
ii  libxcursor1                           1:1.1.14-1+b4
ii  libxext6                              2:1.3.3-1+b2
ii  libxml2                               2.9.4+dfsg1-2.2
ii  libxmu6                               2:1.1.2-2
ii  libxt6                                1:1.1.5-1
ii  procps                                2:3.3.12-3
ii  python3                               3.5.3-1
ii  python3.5                             3.5.3-3
ii  virtualbox-dkms [virtualbox-modules]  5.1.22-dfsg-1
ii  zlib1g                                1:1.2.8.dfsg-5

Versions of packages virtualbox recommends:
ii  libgl1-mesa-glx [libgl1]  13.0.6-1+b2
ii  libqt5core5a              5.7.1+dfsg-3+b1
ii  libqt5opengl5             5.7.1+dfsg-3+b1
ii  libqt5widgets5            5.7.1+dfsg-3+b1
ii  virtualbox-qt             5.1.22-dfsg-1

Versions of packages virtualbox suggests:
pn  vde2                            <none>
ii  virtualbox-guest-additions-iso  5.1.22-1

-- no debconf information