I haven't found anyone with this problem I've been looking for weeks.

This is the problem
the main dvi port works with the moniter with a dvi to vga adaptor
If i plug in the tv to the second dvi port with a dvi to hdmi adaptor it freezes
the tv works if i hook it up to the main dvi port and start up the computer, but it looses signal when the desktop loads

Is this a problem with the graphics card or with the kext or something I'm new to all of this ex windows users sorry

Hardware Overview:

Model Name: Mac Pro
Model Identifier: MacPro2,1
Processor Speed: 2.43 GHz
Number Of Processors: 1
Total Number Of Cores: 4
L2 Cache: 8 MB
Memory: 2 GB
Bus Speed: 1.07 GHz
Boot ROM Version: MP21.005C.B01
SMC Version (system): 1.13f3
Serial Number (system): SOMESRLNMBR
Hardware UUID: CB66A6CF-2854-343C-B21A-7D4D2485030B

GeForce 9800 GTK+:

Chipset Model: GeForce 9800 GTK+
Type: GPU
Bus: PCIe
PCIe Lane Width: x16
VRAM (Total): 512 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x0613
Revision ID: 0x00a2
ROM Revision: xx.xx.xx - internal
Resolution: 1024 x 768 @ 60 Hz
Pixel Depth: 32-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Display Connector:
Status: No Display Connected

mother board

The tv is a sony bravia lcd

I don't know what other information you need to help me if you need more tell me what it is and I will get it for you