Tack för tipsen! Innan jag i värsta fall försvinner in i Mordors mörker för gott vill jag citera följande från maxfixit.com:
"Troubleshooting Mac OS X 10.3.x.: Graphics cards fix;
Graphics card fix working for brands other than 3Dfx Yesterday's reported Terminal-based workaround for removing limitations from 3Dfx cards under Mac OS X 10.3.x has been confirmed by several readers, and is also working for cards from other manufacturers.
For reference, the Terminal command is as follows: sudo nvram boot-args="romndrv=1" followed by a restart.
MacFixIt reader Gary Mickels writes: "I have an old out of date IX Micro PCI video card. I installed 10.3 and sure enough I lost my second display. While looking around for a new video card I noticed your possible fix for getting 3rd party 3D cards to work again. I followed the directions posted and copied the terminal command into my terminal and restarted the computer. It worked! Thanks to David Besade."