Not sure. The resolution would have also been my first guess.2. What can I try? The problem reappears when I change the screen resolution via system->preferences->screen resolution. What else can I do?
Hardy 8.04 has been a bit of a step backwards for some hardware Sometimes it doesn't become obvious until you try an openGL app.
What's your graphics hardware ? (model, card or onboard, monitor)
A proprietary driver (you would have been asked for permission before installing) or the default open source driver ?
will return what hardware was detected.Code:lspci
should return what driver is in useCode:cat /var/log/Xorg.0.log | grep Driver
might give a clue if hardware acceleration is being usedCode:cat /var/log/Xorg.0.log | grep -i render\*
I'm grasping at straws here a little, but more info never hurts. Maybe someone here is running similar gear. There's a a driver called vesa if all else fails but it can be ugly or not work at all..