V5 5500 only uses only the first chip in 2D. Setting single chip mode will only affect 3D.

try removing your primary card.

thx for all advices!! i know the problem know, its the asrock k7s8xe motherboard. it doesnt have a good compatibility with the v5 mac. in my old k7sv5za elitegroup motherboard the voodoocard works perfectly. i also tried out UT99 with 3dfx glide -> the second gpu works too. strange that asrock has such compatibility problems with older cards.

there you see older boards have better compabillity than the somewhat newer ones in most cases.

Though my Voodoo5 5500 PCI does work perfectly in my MSI MS-9130 K8T Master2-FAR Dual Opteron Board, which isn't that old. I suppose the MAC cards have more compabillity problems than the normal 5500 PCI PC versions, which still sounds to be an odd thing.

But anyways good to see your Voodoo5 5500 PCI For Macintosh is in good shape and congrats by getting it working also![)]