Only Resolution option is 3200 x 1800 - Can't lower

Technical Support
Hi there,

I received my Dell XPS 13 inch Laptop today with 4k screen with a native resolution of 3200 x1800. I Installed Diablo 3 and went to lower the resolution first thing as I knew the laptop wouldn't play the game well at 3200 x 1800 even the menu was lagging badly, however found that I can not select any other resolution apart from the native option. If I change my screen resolution in windows, and then launch the game, the game still launches in 3200 x 1800 and I am still unable to select any other resolution, I only have two options: 3200 x 1800 (49) and 3200 x 1800 (60). I've tried to edit the resolution in D3prefs, but it has no effect. Any help would be very much appreciated, thanks!
01/16/2017 06:56 PMPosted by Neviss
I received my Dell XPS 13 inch Laptop today with 4k screen with a native resolution of 3200 x1800.

3200 * 1800 is not 4k... 3840 * 2160 is 4k.

Firstly make sure the game is set to full screen and not any sort of windowed mode as windowed modes might restrict the selection of resolution. If the problem still persists...

I am guessing your graphic drivers is not advertising resolutions other than 3200 * 1800, the panels native resolution. Look inside the driver settings to see if this is the case. For NVidia one can see the available resolutions under change resolution setting while having the display selected. If a full range of lower resolutions is displayed then something is wrong with Diablo III detecting available resolutions. If only 3200 * 1800 in various forms is displayed then you will need to manually add custom resolutions that are lower. Be warned that adding custom resolutions not supported by the panel (listed on the panel technical specification) might work but can damage the panel/graphic card and will likely void any warrantee.

If smaller resolutions are present but still not selectable in Diablo III then try repairing Diablo III and renaming the D3Prefs.txt file in Documents/Diablo III. If still smaller is not available then try reinstalling graphic and display drivers. If smaller resolutions are missing and you cannot find the technical specification for the panel or cannot customize the available resolutions then try reinstalling both graphic and display drivers.

Clean install the dell graphic drivers appropriate for your system then install the display drivers (if any). Hopefully this might add any missing resolutions supported by the panel without any of the risks of customizing resolutions. You can try with generic graphic drivers for your hardware, however these usually are bug prone on OEM hardware such as often used by Dell.

Read over this and wanted to check what display modes you've tried. If you're trying to get the game to match your desktops resolution then you'll want to try windowed\windowed (fullscreen).

Apart from that we can try running the game with the 32 bit client which is going to switch the game from DirectX 11 to DirectX 9:

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