[Qt-interest] QT Creator hangs drawing window

[Andreas Pakulat]

On 09.04.09 14:23:38, Andrew Brooks wrote:
> On Thu, 09 Apr 2009 11:12:32 +0100, Andreas Pakulat <apaku at gmx.de> wrote:
> > On 09.04.09 10:29:16, Andrew Brooks wrote:
> >>
> >> I've just built Qt-4.5.0 and Qt-Creator-1.0.0 but it hangs.  It opens a window
> >> which is totally grey, no content whatsoever, and gets stuck consuming CPU time
> >> but not making any system calls.  I tried on two different linux boxes and used
> >> strace to verify the latter.
> >
> > Does this also happen when you run it with the native paintengine
> > instead of the raster engine?
> 
> Thanks for the tip.  When I run
> 
> % qtcreator -graphicssystem opengl
> 
> on one computer I get
> Unable to load graphicssystem "opengl"
> 
> on another computer I get these errors and the window is blank as before
> using visual class 4, id 28
> QGLPixelBuffer: Unable to find a context/format match - giving up.
> QGLWindowSurface: Failed to create valid pixelbuffer, falling back
> hijackWindow() context created for Core::Internal::MainWindow(0x8123f80) 1
> QGLWindowSurface: Using plain widget as window surface 0x81594b0
> 
> When I run
> % qtcreator -graphicssystem native
> the window is blank as I described
> 
> When I run
> % qtcreator -graphicssystem raster
> I actually see the window contents!!
> 
> Problem (1) only the raster system displays anything at all.
> 
> BUT, I then clicked in the Locator and up popped the list of options.
> Subsequently it goes blank (white) and won't disappear. (Problem 2)
> 
> Even worse when I click and type into the locator the whole of qtcreator
> hangs.  (Again, using gdb it appears to be in QRasterizer::rasterize).
> Problem 3!   (I suspect all three are somehow related?)

That sounds rather strange, are you sure your Qt has been built
properly? Did you try to change the graphics card driver (i.e. upgrade)?

Andreas

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