[ubuntu] Multihead trouble with Matrox G450 PCI on Sunfire V40z

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http://ubuntuforums.org – I'd like to use this SunFire server for image processing, playing with Blender (runs fine with the G450 BTW) and all the other things where a normal PIII/P4/Athlon computer is too slow for. It's a really cool octacore machine with 32GB RAM, a bit noisy, but that doesn't matter so far as I have headphones with music. I'm using Ubuntu 10.04, as I had trouble with Gentoo detecting the Ultra-SCSI drives. Because the onboard Trident Microsystems Blade 3D graphic card doesn't allow high resolutions, I got 4 Matrox G450 PCI graphic cards and plugged them into the PCI-X slots and they work fine on 3, (Hardware)