[Interest] Problem with XCB and OpenGL

[Calogero Mauceri]

Hi all,

My application is exiting with the following error whenever I try to use 
OpenGL

QXcbIntegration: Cannot create platform OpenGL context, neither GLX nor 
EGL are enabled

My desktop is Ubuntu 12.04 (32 bit).  I configured Qt 5.6.0 with the 
following options

./configure -qt-zlib -system-libpng -system-libjpeg -platform 
linux-g++-32 -fontconfig -qt-xcb -nomake examples -nomake tools

This is part of the configure output (full output attached)

OpenGL / OpenVG:
     EGL .................. yes
     OpenGL ............... desktop
     OpenVG ............... no

[...]

QPA backends:
     DirectFB ............. no
     EGLFS ................ yes
       EGLFS i.MX6 ........ no
       EGLFS i.MX6 Wayland. no
       EGLFS EGLDevice .... no
       EGLFS GBM .......... no
       EGLFS Mali ......... no
       EGLFS Raspberry Pi . no
       EGLFS X11 .......... yes
     LinuxFB .............. yes
     Mir client............ no
     XCB .................. yes (bundled copy)
       EGL on X ........... yes
       GLX ................ no
       MIT-SHM ............ yes
       Xcb-Xlib ........... yes
       Xcursor ............ yes (loaded at runtime)
       Xfixes ............. yes (loaded at runtime)
       Xi ................. no
       Xi2 ................ yes
       Xinerama ........... yes (loaded at runtime)
       Xrandr ............. yes (loaded at runtime)
       Xrender ............ yes
       XKB ................ yes
       XShape ............. yes
       XSync .............. yes
       XVideo ............. yes

I've googled a lot about this issue but I did not find any solution to it.
Do you have any clues on how to fix this issue?

Thanks in advance for your help,
Calogero

-- 
Calogero Mauceri
Software Engineer

Applied Coherent Technology Corporation (ACT)
www.actgate.com

-------------- next part --------------
Running configuration tests (phase 1)...
Done running configuration tests.
Creating qmake...
Done.
Running configuration tests (phase 2)...
Done running configuration tests.

   Configure summary

Build type:    linux-g++-32 (i386, CPU features: none detected)

Build options:
  Configuration .......... accessibility accessibility-atspi-bridge audio-backend avx c++11 clock-gettime clock-monotonic compile_examples concurrent dbus egl eglfs egl_x11 enable_new_dtags evdev eventfd fontconfig full-config getaddrinfo getifaddrs harfbuzz iconv inotify ipv6ifname large-config largefile linuxfb medium-config minimal-config mremap nis opengl openssl pcre png posix_fallocate precompile_header qpa qpa reduce_exports reduce_relocations release rpath shared small-config sse2 sse3 sse4_1 sse4_2 ssse3 system-freetype system-jpeg system-png threadsafe-cloexec xcb xcb-plugin xcb-qt xcb-xlib xinput2 xkbcommon-qt xlib xrender zlib 
  Build parts ............ libs
  Mode ................... release
  Using sanitizer(s)...... none
  Using C++ standard ..... c++11
  Using gold linker....... no
  Using new DTAGS ........ yes
  Using PCH .............. yes
  Using LTCG ............. no
  Target compiler supports:
    SSE2/SSE3/SSSE3 ...... yes/yes/yes
    SSE4.1/SSE4.2 ........ yes/yes
    AVX/AVX2 ............. yes/no

Qt modules and options:
  Qt D-Bus ............... yes (loading dbus-1 at runtime)
  Qt Concurrent .......... yes
  Qt GUI ................. yes
  Qt Widgets ............. yes
  Large File ............. yes
  QML debugging .......... yes
  Use system proxies ..... no

Support enabled for:
  Accessibility .......... yes
  ALSA ................... no
  CUPS ................... no
  Evdev .................. yes
  FontConfig ............. yes
  FreeType ............... yes (system library)
  Glib ................... no
  GStreamer .............. no
  GTK theme .............. no
  HarfBuzz ............... yes (bundled copy)
  Iconv .................. yes
  ICU .................... no
  Image formats: 
    GIF .................. yes (plugin, using bundled copy)
    JPEG ................. yes (plugin, using system library)
    PNG .................. yes (in QtGui, using system library)
  libinput................ no
  Logging backends: 
    journald ............... no
    syslog   ............... no
  mtdev .................. no
  Networking: 
    getaddrinfo .......... yes
    getifaddrs ........... yes
    IPv6 ifname .......... yes
    libproxy.............. no
    OpenSSL .............. yes (loading libraries at run-time)
  NIS .................... yes
  OpenGL / OpenVG: 
    EGL .................. yes
    OpenGL ............... desktop
    OpenVG ............... no
  PCRE ................... yes (bundled copy)
  pkg-config ............. yes 
  PulseAudio ............. no
  QPA backends: 
    DirectFB ............. no
    EGLFS ................ yes
      EGLFS i.MX6 ........ no
      EGLFS i.MX6 Wayland. no
      EGLFS EGLDevice .... no
      EGLFS GBM .......... no
      EGLFS Mali ......... no
      EGLFS Raspberry Pi . no
      EGLFS X11 .......... yes
    LinuxFB .............. yes
    Mir client............ no
    XCB .................. yes (bundled copy)
      EGL on X ........... yes
      GLX ................ no
      MIT-SHM ............ yes
      Xcb-Xlib ........... yes
      Xcursor ............ yes (loaded at runtime)
      Xfixes ............. yes (loaded at runtime)
      Xi ................. no
      Xi2 ................ yes
      Xinerama ........... yes (loaded at runtime)
      Xrandr ............. yes (loaded at runtime)
      Xrender ............ yes
      XKB ................ yes
      XShape ............. yes
      XSync .............. yes
      XVideo ............. yes
  Session management ..... yes
  SQL drivers: 
    DB2 .................. no
    InterBase ............ no
    MySQL ................ no
    OCI .................. no
    ODBC ................. yes (plugin)
    PostgreSQL ........... no
    SQLite 2 ............. no
    SQLite ............... yes (plugin, using bundled copy)
    TDS .................. no
  tslib .................. no
  udev ................... no
  xkbcommon-x11........... yes (bundled copy, XKB config root: /usr/share/X11/xkb)
  xkbcommon-evdev......... no
  zlib ................... yes (bundled copy)