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James Jack97005
1 discussion post
Hi,

I've got a PC with an rtx4090. It should in theory be able to support 4 monitors but currently I can't make that happen, either through the regular windows settings or DF. When I try to enable the 4th monitor it always just does nothing and then asks to revert or continue. the 4th monitor never changes, always stays black.

I can make any combination of 3 monitors work just fine, so each screen and its connection works indepedently, but can't have 4 in total.

Any idea what is going wrong here?

Thanks
• Attachment [protected]: DisplayFusionDebugInfo.zip [107,606 bytes]
• Attachment [protected]: Screenshot 2025-04-29 214708.png [107,512 bytes]
• Attachment [protected]: Screenshot 2025-04-29 214840.png [122,858 bytes]
19 days ago  • #1
Owen Muhlethaler (BFS)'s profile on WallpaperFusion.com
It sounds like you're hitting the maximum resolution supported by the card, I believe it caps out at 2x4K. DisplayFusion uses the Windows API to set the monitor configuration though, so if it's failing to apply in Windows it will fail to apply in DisplayFusion as well, there isn't anything we can do there unfortunately.
17 days ago  • #2
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