IORegistryExplorer not showing EDID key..
IORegistryExplorer not showing EDID key..
- Subject: IORegistryExplorer not showing EDID key..
- From: "rohit dhamija" <email@hidden>
- Date: Tue, 8 May 2007 12:10:03 +0530
Dear All,
Below is my machine configuration
///////////////
Mac OS X: 10.3.9 ppc
G5 machine
Graphics card:nVIDIA "GeForce Fx 5200" Device ID: 0x0321 (DUAL HEAD CARD)
///////////////
I am in process of finding EDID data of my two monitors attached to
this card, using IORegistryExplorer. Below is the path
from which I am trying to get the same:
IODeviceTree -> Root -> device-tree -> pci@f0000000 -> NVDA,Parent@10
-> NVDA,Display-A@0 (for First Display)
and NVDA,Display-B@0 ( for second Display)
When I connect single monitor it gives the key for "EDID" in Display
A,but if I connect 2 monitors then in Display A i am
getting "EDID" key for first display in Dispaly-A, but for second
display i not getting any "EDID" key in Display-B.
Ideally, when we connect two monitors, then the IORegistry should
display 2 different EDID keys, i.e. different EDID data for
corresponding to each monitor.
I tried the same by restarting the machine many times, but the issue
remains the same. also , i tested this issue on other
dual head cards NVIDIA 7300 GT, NVIDIA Quadra FX 4500, the issue
remains the same.
Is this issue related with the graphics card manufacturer or with the
Macintosh OS ? Has anybody encountered this situation
before? or If anybody know some other way to get the EDID data for
both the monitors.
Please suggest.
Thanks in advance,
Rohit
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