Hi

I have developed an application under Qt 4.5.2, which still runs fine.
Unfortunately I have not found the time so far to port it to a newer Qt-Version.

Today, I installed my app on a new Windows 7 machine which has

onchip Intel HD graphics.

Now, I encounter an incorrect refreshing-behaviour
of my QGraphicsView with underlying OpenGL viewport
(just on this machine, with newest Intel drivers):

I show a usual QWidget as window above my
QGraphicsView (so the widget overlaps the view partly).
If I then close this window, the view only refreshes those parts
which werer hidden behind the window.
The other parts of the view are "over-painted".

Again: on all other machines I have tested so far, this does happen.

I also tried to update manually the view, the scene the items, and also
the GLWidget, without success.

Do you know about any problems with Intel HD graphics controllers?

Best regards and many thanks in advance!

Olli