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Old 07-30-10, 03:19 PM   #2
NVIDIA Corporation
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Join Date: Feb 2010
Location: Santa Clara, CA
Posts: 237
Default Re: Quadro NVS 450 on Ubuntu 10.04 crashes X / no screens

The Quadro NVS 450 actually has two GPUs on one board. What's most likely happening is that the X server is probing a GPU that doesn't have any displays connected to it.

Try either of the following:

1) Explicitly set a PCI Bus ID in your X configuration; for example, your X log shows that it's trying the GPU at 4:0:0, while your lspci output shows a GPU at 3:0:0 and another at 4:0:0. You can try adding the following line to /etc/X11/xorg.conf:

BusID "PCI:3:0:0"'
2) Try other ports on the board.
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