elydelacruz

Hey, I've noticed something about the overclock bios for this card (nvidia gtx 660m). The Ghz overclock edition doesn't allow to get any hz higher than 60 hertz through dp -> hdmi adapter whereas the other version allows me to go up to 80hz! Could some of the settings within that version of the bios help with the dp -> dual link dvi-d adapter issue?

As a side note: I think the dp -> dvi-d dual link adapter issue is mostly an issue with these monitor makers as I was able to get 120hz with a dp -> hdmi adapter on the samsung (though with artifacts and blacking out but was able to set it nonetheless).

Also on previous S27A950D monitor I got 120hz through dp -> hdmi adapter but with screen artifacts and in some cases no artifacts but annoying screen blanking every time I switched between programs and frequent intervals while watching video.

Am going to reflash card now and install a fresh copy of nvidia's latest drivers (shimmied of course) to see if it works. In the meantime, even though your modded inf file (from page 1) is a different format from nvidia's latest driver inf file(s) do you think your modded inf file would still work with nvidia's latest driver?

Yeah, I get full clean picture at 1080p upto 80hz refresh rate on my asus 27" using a dp -> hdmi adapter

and a clean picture at 1080p at 60hz on my projector also on projector I get 120hz at upto 1600 x 1200 resolution (all using dp -> hdmi adapter).

Oh, when I say I get HDMI upto 80hz I mean through an displayport to hdmi adapter.

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I'm at a lost as well cause I'm able to do displayport to dvi and hdmi with no problem just as long as the adapters are not active.

Sounds like a voltage issue (maybe not enough power hitting the displayport).

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Or maybe its just another messed up dp -> dvi-d adapter. I'll compile my laptop specs later on so that you could see what I'm working with.

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And yes I used the vbios originally posted in the beginning of this post.

Hey all,

I've since returned the samsung s27a950d and have gotten Asus's 144hz 27" monitor. I'm still also having the issue where no active adapters work and am currently only able to go up to 80hz with hdmi :-( I have the Eurocom gtx 660m upgrade kit card (with out copper shim) and am wondering if the missing copper shim could be the culprit. Any ideas? anyone?

Also none of the active displayport to dvi-d adapters ever worked (including the dual link active one). I'm wondering if it has something to do with the vbios or missing copper shim. Any ideas would be helpful.

Thks E.

svl7 heeeelllllp!!! Displayport still not functioning on m15x nvidia 660m with Samsung S27A950D. Any more ideas?

Hey All,

Results of further testing:

Used the following drivers for the test:

Geforce 310.54 Beta Driver (supports DP 1.2)

Drivers | GeForce

1). Displayport - DVI-D: Looks good no 120hz (knew this already, tried it anyway)

2). Displayport cable wit support for DP 1.2 and DP 1.1a - no picture

Will continue to post results till I'm successful with Displayport.

Flashed my card still doesn't work on display port (with new cable).

Also found this link pertinent to installing nvidia drivers from their site (both legacy and beta drivers):

https://forums.geforce.com/default/topic/513621/installer-cannot-continue-the-graphics-driver-could-not-find-compatible-graphics-hardware-installer-/

Am going to tinker some more tonight. Will post update on results over the weekend.

Cheers to all

Finally!

I found out, that doing things in the right order sometimes helps ;-)

After flashing the vBios in the first post in this thread a clean install of the NVidia-Drivers was needed - and suddenly everything (including Display Port and laptop display) work fine.

My mistake was, that I flashed the vbios over and over, but there was no automatic detection of the activated diaplay port.

So thanks a lot svlt7 for providing help and bios!

Regards WAHNfred

What do you mean exactly by fresh install? I've tried official nvidia drivers, techpowerup drivers, and the one at the beginning of the thread but am still drawing up a blank on the displayport. Can you clarify "NVidia-Drivers"? Which ones do you mean the offical drivers or the *.inf posted in beginning of thread?

Thank you svl7 still can't get displayport to show. Ideas? Will also ask other user how he did (this thread page 3).

Hello, all

I've tried All version Ghz, overclock, even a dell version from http://forum.techinferno.com/general-notebook-discussions/1847-nvidia-kepler-vbios-mods-overclocking-editions-modified-clocks-voltage-tweaks.html but I get the ID mismatch error.

Also my system recognizes card as dell but as svl7 said the nvidia inspector recognizes card according to what is on the system.

Any ideas?