I've compiled a basic Qt app as given in this tutorial: http://zetcode.com/tutorials/qt4tutorial/introduction/ ("Testing a Small Example").

When I run it, the window shows up but Qt doesn't draw in the background. I end up with phantoms from windows behind it: http://i.imgur.com/yg79s.png

The window will draw the background correctly when I resize it -- MOST of the time. And sometimes there will be a noticeable delay between resizing and drawing in the window.

Am I missing some libraries? Is this a bug? Maybe there's something else I can look up to find a solution?

I'm running Debian sid, my window manager is fluxbox, and my video card is a GeForce FX Go5200 64M.

I should note that this works perfectly well on another computer I have that's running Debian sid as well.

Hmmm ... slackware64 13.1, fluxbox 1.1.1, Intel Corporation Mobile 4 Series Chipset


No problems. I'd say it's something about how your Qt interacts w/ your graphics
driver/X11 set-up. What graphics card/device driver is the other machine of yours using?



Cheers,
Tink

Radeon HD 3200 Graphics with the fglrx driver. This is an nVidia machine. Maybe I should google incompatibilities with Qt and my graphics card/driver?

Sounds like an option; and while the posts I dug up mentioning NVidia
and Qt4 problems look kind of unrelated: what happens if you start
your sample app w/

Cheers,
Tink

I get the same behavior, unfortunately. I've tried it with ./test -graphicssystem native with no luck as well.