mtirion
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XPS 8700, Nvidia GTX645, DisplayPort resolution problems - solved

I appear to have solved this on my system after a long struggle. As it took me some time, it looked like a good idea to me to post this.

I have a Dell XPS8700 with an NVIDIA GTX645 card with two Dell U2414H monitors attached through HDMI and DisplayPort. The one on the DisplayPort suddenly switched from 1920x1080 to 640x480 (really small! Smiley Happy) with no option to change this.

This problem happened with Windows 8.1. After a fresh install of Windows 10 it was solved for 2 weeks, then it started all over again.

There was a hint in the NVIDIA control panel: it did recognize the Dell monitor through HDMI, but through DisplayPort it was something like "Nvidia Digital Monitor" - or, "I don't know what it is".

This is what I did:

1. I updated the BIOS to the latest version.

2. I updated the Chipset drivers for my system

3. I installed the latest, greatest drivers from NVIDIA

4. In the settings of my monitor in the menu DisplaySettings - DisplayPort 1.2, I ENABLED that feature

I think step 4 did the final trick for me, possibly in combination with the rest)

I hope this helps.

Martin

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RE: XPS 8700, Nvidia GTX645, DisplayPort resolution problems - solved

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