Possible to Override Max Resolution or Force a EDID Rescan in CCC?

Malichite

I am currently having a problem in the latest driver set (8.9 / 8.10b) where CCC initially detected the correct resolution of my NEC 2490WUXi (1920x1200) monitor via a DVI-D cable. I then was trying to display out to an LCD TV using the component out feature where I tried to clone the display. Naturally the resolution was reduced since component out doesn't support 1920x1200, but the problem is that my monitor is now reported having a max resolution of 1280x720 regardless whether I am in Clone mode or Single Display. I can manually set the resolution higher in Windows Display Properties, but this is overridden by the Catalyst drivers and I get a report resolution of 1920x1200, but instead it is some weird scaling mode that tries to display 1920x1200 in 1280x720 (resolution confirmed as really only 1280x720 by my display's OSD). For some reason it now see my NEC 2490WUXi as a standard flat panel TV display and the only way that I can get higher resolutions is to enable the 1080p HDTV modes, but even then I can only set it to 1920x1080 and not the native 1920x1200.

Any advice on this would be helpful since this is a major frustration that I am having this issue with my new NEC 2490WUXi display and my new Sapphire 4870 1GB. I have tried everything from using a different DVI cable, to trying different ports on the monitor / vid card, uninstalling the drivers and using drivercleaner, but regardless of what I do I can't get it to correctly detect my max resolution. My final work around was to use a VGA->DVI cable since the NEC 2490WUXi does support an analog input and magically that allows me to use my correct resolution, but I really would like to use a DVI-D connection instead of analog. Using the VGA->DVI cable forces CCC to detect the display as a Monitor0 instead of a Digital Flat Panel1 so I can override the max resolution if needed (DDC correctly detected my display props so I didn't need to), but is there a way to force an override or different mode for the Digital Flat Panels or better yet can I force another EDID scan of my monitor since apparently it got the correct resolution intitially? Also just to note that simply redetecting the display doesn't do anything but detect its presence not its resolution max.

Edited to add more info that was requested on the Rage3D forums:
I should also mentione that I have already installed/reinstalled the correct NEC device drivers for my monitor as well. As I said this is only an issue when I try the Digital cable, in fact since I have both an analog and digital input on my monitor I can try both modes by simply switching the inputs. However when I try to clone the display between the two monitor inputs it reads the Analog VGA->DVI cable as LCD2490WUXi with a max resolution of 1920x1200 (Monitor 0) and the DVI-D cable as LCD2490WUXi (Digital Panel DVI 3) with a maximum resolution of 1280x720.

I have also tried several other DVI cables to no avail, but both a nVidia GTX260 in my 2nd system and this 4870 in Analog mode (VGA->DVI) detects the monitor specs fine. The issue is clearly in the Catalyst drivers since Windows Display properties is correctly listing my Monitor with the correct max resolution, but this is being overridden by the Catalyst driver suite. As I said before I can set windows to a higher res and it reports the new resolution, but it is obviously still at 1280x720 with some horrible scaling effect (same effect if I force the resolution mode with PowerStrip). If I however try to switch the resolution mode using CCC or ATI Tray Tools no resolutions higher than 1280x720 are listed, so I can't get around the max resolution override.

What I am looking for is either a way to hack a Catalyst registry entry to use the correct resolution or force it to redetect my EDID monitor specs, as it was detected correctly in the first place before being reduced to 1280x720p when I tried to clone the display using the component-out cable to a 1080p LCD TV. Thanks,

ohm

Lets see if we can't get an answer, I'm having the same issues...

Bump

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calabozo

Hello,

Did anyone find out how to solve this issue?

I'm having a very similar problem...

Please post the solution if you have one.

Thanks in advance

Cheers!

MetalSlayerX

First make sure you manually loaded the .inf file for the monitor in Device Manager. Then go to your windows properties and set your resolution to 1920x1200. Your screen should still look screwed up. Make sure you turn off HDCP in the OSD on the monitor. Now turn off your monitor with the front button and then with the switch located at the left side of your monitor and then press the power button. The light will intermittently turn on for a second and die. Somehow this resets the detection I believe, because this is how I got it to work; you can also turn and leave your panel off for 10 minutes. You can either change the DVI connection on the back of the monitor or power it back on. Usually I just power it back on and the screen will display natively again. If it doesn't then try switching DVI ports on the back of your monitor. These are the only way that I got it to work. For more advanced OSD menu options consult the manual.

Have fun with 2490WUXI & 4870.