diff -r 5dc02b23752f -r 3e2da88830cd src/gui/egl/qegl_x11.cpp
--- a/src/gui/egl/qegl_x11.cpp	Tue Jul 06 15:10:48 2010 +0300
+++ b/src/gui/egl/qegl_x11.cpp	Wed Aug 18 10:37:55 2010 +0300
@@ -415,7 +415,10 @@
 
         // At this point, the widget's window should be created and have the correct visual. Now we
         // just need to create the EGL surface for it:
-        return eglCreateWindowSurface(QEgl::display(), config, (EGLNativeWindowType)widget->winId(), 0);
+        EGLSurface surf = eglCreateWindowSurface(QEgl::display(), config, (EGLNativeWindowType)widget->winId(), 0);
+        if (surf == EGL_NO_SURFACE)
+            qWarning("QEglContext::createSurface(): Unable to create EGL surface, error = 0x%x", eglGetError());
+        return surf;
     }
 
     if (x11PixmapData) {