Problems with 3d Orbit/hardware acceleration

[Neil W]

I have never been able to get hardware acceleration to work with Autocad for
3D shaded viewing. With Land Desktop 3, when I set the video acceleration to
use wopengl7.hdi, Autocad immediately hangs when I use 3d orbit with shading
enabled. With Land Desktop 2005 when I set video to use wopengl8.hdi, 3d
orbit works, but it is slower than software acceleration and the model
dispappears during the orbit so I cannot view it dynamically. It reappears
when I stop the orbit.

I have had the problem on several machines, including 2 machines at my
former place of employment and my current machine. The machine I am using
now has had a hard disk array installed so the OS and applications were all
reinstalled. I have reinstalled both versions of Land Desktop several times
due to other issues, yet this problem persists. I installed the latest
driver for my video card today and still no good.

OS: Win XP Pro SP2
Dell 530 Precision workstation with XEON Main board and Dual 1.6 GHZ Intel
CPU's
nVidia QPRO 980 XGL 128 MB display adapater with dual Viewsonic LCD displays

[Neil W]

I downloaded and installed PowerDraft by nVidia. This tool has it's own
nvgl.hdi heidi driver and it is working with Land Desktop 3/Acad 2002. Thus
it seems that the problem is with the wopengl7.hdi driver. I then
uninstalled Powerdraft and reset the video accelerator to use the wopengl7
driver and it seems to be stable.

"Neil W" <nospam@nospam> wrote in message news:41e40d2f_2@newsprd01...