Black screen in 3D window

[Michal Forejt]

In AC 8.1, when I go to 3D window, I normally see model. But when I turn camera, whole window is black and I don't see anything. When I finish move with camera, I see model again. But it's too hard to find best view, when you don't see model during camera move :[


Thx and btw. excuse my poor english

---------------------------
AC 8.1, G4 DP 867, OSX 10.3.5, 768MB RAM, GeForce 4MX 32

[Dwight]

Time to restart ArchiCAD. I get this in OpenGL mode sometimes, too.

[Michal Forejt]

Thanks for reaction.
how do you mean restart AC? Of course I tried quit AC and startup again and even I restarted whole computer. Nothing helped

[Dwight]

Switch to internal engine for the 3D and see if you get the same result.

[Michal Forejt]

Internal engine is ok. Surely it is a problem with openGL. I use AC 8 and OpenGL for a long time and I never had this problem.

[Dwight]

Time to throw away your computer. It is junk.

Joke. Haha.

All I can say is it has happened to me before. It is sometimes a mystery glitch in OpenGL and sometimes I have the sun turned off.

[henrypootel]

This is a Graphics Card problem. Get the latest drivers for your graphics card and install them. If this doesn't work, then you need to turn down the acceleration setting in windows(control-panel->display->advanced->troubleshooting)
Try taking it down chunk by chunk until the problem is fixed. if neither of these solutions work, then it's time to buy a new graphics card(yay!)

[Dwight]

He's on mac.
It can't just start hapening because a driver is old.
There's a memory leak or something - I have this intermittently, but a restart usually fixes it.

[Dwight]

The 32 mg could be overstressed - try making your 3D window half the size and see....

[henrypootel]

You say that it worked fine for ages in 8. Have you just upgraded to 8.1 and had the problemm start, or has 8.1 been working for a while, and is only now causing problems?