So I realize that this may seem very trivial, but I bought a new graphics card (EVGA GTX 260) to replace an 8800GTS and two things happened that I did not expect. First, the card is very long and barely fit in my case (Antec 900)…which is surprising as this case has a decent amount of room inside. Guess all those stream processors take up some serious real estate. Also, it needs a 500 watt power supply minimum with 2 6-pin pcie power connectors (or an unused pair of IDE power connectors). Second, when I hooked it up to my main monitor, which is a Westinghouse LM2410, and installed the most recent nvidia driver (178.24) the text looked jagged, blurry, and fuzzy. There was a second monitor (Dell 1905FP) hooked up to the card as well.
When I looked at the nvidia control panel I noticed that the Westinghouse was being treated as an HDTV. And although the resolution was set to 1920×1200 (native for the screen) it was not displaying 1920×1200. BTW, this monitor connects via an HDMI (monitor) to DVI (card) cable. The Dell monitor, being treated by the card as a monitor, looked perfect the entire time. I also removed the nvidia drivers, and with the Windows XP drivers the Westinghouse looked fine (although it had no graphics acceleration). Looking at a few posts on the nvidia and other forums I found the answer.
The easy solution was posted here and here.
The only change is that in the latest nvidia driver the inf, called nv4_disp.inf, needs to have the OverrideEdidFlags0 entry under the correct processor for the card (in my case under the GT2x heading of the [nv_SoftwareDeviceSettings] area). You will also need to ensure the first 4 bytes of the reg key are correct for your monitor. Use Phoenix EDID Designer to extract the current monitor EDID values, look at bytes 8-11 and make sure the values you are entering in the inf match. If you have two monitors you’ll need to figure out which is the correct one in Phoneix. The most popular EDID values appear to be:
Viewsonic VX2835wm – 5A,63,1F,0F
Westinghouse LM2410 – 5c,85,80,51
LG – 1E,6D,3F,56
I realize this is posted elsewhere and in other forums, I’m just hoping this helps someone find the answer quickly and without rebooting your system 1 million times trying to fix this issue.
Comments
Thank you for this solution. I had the exact same problem (LM2410 and GTX 260 Core 216) and found the same solutions, but they didn’t work because I failed to notice that the GT2X had a different heading in the latest drivers.