Hello all,
For some background, I have two 1080ti (EVGA Founder's Edition and SC Black) in SLI along with 5 Dell S27DG16 that I typically configure in 1 x 5 portrait surround. I previously had two 1080ti Founder's Editions and ran this setup with no issues whatsoever, but one of them recently failed and I had to send it in for RMA where I received the SC Black. Expected it to work fine as it's still a reference board, and all seems good - SLI will enable in maximum performance mode, but surround is giving me issues with the display connection error message.
I have 3 monitors connected to the top card, and two connected to the bottom card - all displayport. I've followed the Nvidia connection guide. If I enable surround on either the top 3 or bottom 2 displays only, it works fine. It's only when I attempt to surround any combination of the screens connected to the top and bottom displays together that I get "Display Connection Error".
I've tried a fresh install of Windows 10 x64, tried reseating the cards, have tried multiple SLI bridges. On searching this issue, I saw several resolutions by rolling back / updating drivers but have tried probably 10 different Nvidia drivers at this point, including 418.81, with DDU uninstalls between each. Nvidia control panel and GPU-Z both detect that SLI is active in max performance mode. Tried enabling surround in debug mode to take the SC factory overclock out of the equation. Swapped around the displayport cable configuration. No luck with any of it.
Any suggestions appreciated, thanks!