DVI out to Sony GWIV LCD - height 720 is larger than EDID-specified maximum of 540

[atomjack]

I'm having trouble getting 1280x720 resolution from my Redhat FC3 box to my Sony KDF-42WE655 42" LCD HDTV. I'm using the DVI out on my Gainward Pro GeForce FX 5200 connected to the HDMI in on the tv (with a converter cable). At first I was only able to get it to display 640x480, but then I found two modes that worked: 856x480 and 960x540, with Modelines I found on the GWIII owner's thread. I'm trying to get it to display in either 1280x720 or the native resolution of 1386x788, but with anything above 960x540 I try, I get this in my X log:

(WW) NVIDIA(0): Not using mode "1280x720" (height 720 is larger than
(WW) NVIDIA(0): EDID-specified maximum 540)

Here are the modelines I'm using:
Modeline "960x540" 40.785 960 992 1088 1216 540 541 544 559 -hsync -vsync
Modeline "856x480" 37.530 856 944 992 1112 480 508 509 563 +hsync +vsync

Does anyone know what this EDID-specified maximum is about, and how I can go about getting a higher resolution?

[atomjack]

Well whattya know, I got it to work.

Adding the line
Option "IgnoreEDID" "1"

to the Screen section of your X config file, and it works fine.