anticommonHello everyone. I have a problem, and as meatloaf would put it... 2/3 ain't bad. Except it is because I want all three! So here's the deal. I've got three monitors and can only ever do display out to (any) 2 out of the three at once. This is regardless of which resolution/refreshrate/color depth I set on the monitors. After two are enabled, the third won't turn on when trying to expand the desktop. I have tried in both nvidia control panel and windows display settings to enable the third and always receive some combination of 'display connection error' even though all three are 'recognized' by windows and nvidia. 27GN950-B @ 4K160HZ DSC DP 1.4 (was originally a 3440x1440 120hz monitor)27GN950-B @ 4K160HZ DSC DP 1.4LG C1 @ 4K120HZ HDMI 2.13080 Ti5950xWindows 10 I did speak to a EVGA rep on the phone trying to troubleshoot this, and he basically told me to pound sand and that 2, 4k monitors is the max my GPU will support (he kept telling me 2x 4k is the same as 8k). I told him that before I got my second 27GN950 I had an ultrawide that ran just fine with the other two screens enabled. The issue only started when I switched the ultrawide monitor to a 4k one. I'll compile a list of troubleshooting that I've tried below: Complete DDU + driver reinstallMonitor drivers installedTried to reduce resolution/refresh rateTried enabling surround display in nvidia CPSwapped cables If anyone has an idea of what I can do to fix this I would be very grateful. Thank you for your time!
GTXJackBauer That rep doesn't know what he's talking about.
GTXJackBauer That rep doesn't know what he's talking about. Did you swap cables and inputs from the GPU to see if any of those were the issue?
HoggleIt seems like maybe what the tech was saying is that because the video card only does Display Port 1.4a it's going to hit the limit of 8K UHD 60hz which is being hit by the use of two 4K monitors.
anticommonGTXJackBauer That rep doesn't know what he's talking about. Did you swap cables and inputs from the GPU to see if any of those were the issue? Yes, I have tried all available combinations. I guess the only one that hasn't changed is the TV since there is only one single HDMI 2.1 port available (and I have only one HDMI 2.1 cable) however I feel as though the issue is unlikely to be related to cables considering I can get display out to any of the monitors I want (with some settings fiddling) but just never all three (always fails when attempting to enable third monitor regardless of which one that is). I would also add that I have tried fully power cycling both monitors and the TV.
GTXJackBauer So all cables have been tested. Have all input been tested? If so, you're basically saying no matter what, they all work but just in 2s and not all 3 screens? If yes, my next test would be rolling back the GPU drivers just to test out a few older ones. Not too old but within the 3000 series timeline.
anticommonGTXJackBauer So all cables have been tested. Have all input been tested? If so, you're basically saying no matter what, they all work but just in 2s and not all 3 screens? If yes, my next test would be rolling back the GPU drivers just to test out a few older ones. Not too old but within the 3000 series timeline.I have tried all available DP ports (was wondering if maybe one of the DP and the HDMI ports might 'share lanes'). I can probably find the time this weekend to try out some older drivers. I hesitate to make it a permanent exercise as there are some game ready drivers from the last few months that I would really rather not go without, but for the sake of troubleshooting I will try. Maybe if I can find a driver that works I can send something in to the engineering team to send them a bug report. Or maybe my card really is borked. Luckily I only paid $1800. Can't even buy a bushel of bananas for that much these days.
Sir_Sizzle77Sounds like you've already tried this but if not you can update gpu firmware here: It solved a separate issue for me of not being able to get the bios screen to show up on a monitor with display port.
acupalypseI'm going to guess it's a cable + driver combo. I had the same issue with 2060 having 4 monitors. Updating drivers removed the 4th monitor. Rolling back the driver OR changing the cable made it work.
anticommon Whats funny about what you mentioned though is that I also cannot access the bios on these monitors (27GN950) when connected through displayport.
anticommonSir_Sizzle77Sounds like you've already tried this but if not you can update gpu firmware here: It solved a separate issue for me of not being able to get the bios screen to show up on a monitor with display port. I did update the GPU bios a short while back, I'll have to check if there is a new release. I believe the release I'm on is the one that enabled rebar (or whatever the nvidia naming equivalent is) so maybe there is a newer one. I'm also going to try disabling rebar to see if that is causing this issue. Whats funny about what you mentioned though is that I also cannot access the bios on these monitors (27GN950) when connected through displayport. I believe it has something to do with not sending/receiving the wakeup signal from the PC until windows loads. Maybe a firmware update will fix that for me... worth a shot! acupalypseI'm going to guess it's a cable + driver combo. I had the same issue with 2060 having 4 monitors. Updating drivers removed the 4th monitor. Rolling back the driver OR changing the cable made it work.if all else fails I'll order a whole set of new cables. The only trouble is finding ones that are 100% bandwidth and continuity compliant. Kinda wish I had Linus's $100k cable testing machine...
Cool GTXMaximum Digital Resolution - is listed as 7680 x 4320 & multi monitor @ 4 Nvidia site - under Specs (at the top of page) - then look under "view full specs" In your first post you mention 3 monitors; but, a TV is not usually a monitor, though it can be used as one I am wonder if the issue is related to your LG C1 TV .... I am only mention this because the use of a TV has been known to cause issues in the past for some people with past generations of GPU ... usually to do with the setting TV require Do you have 3 PC monitors to try ? maybe borrow one ? If not file a bug report with Nvidia ... could be some sort of driver limit / issue
anticommonHello everyone. I have been dealing with this issue for ~6 weeks. Tonight, I was playing around in my monitor settings, and was looking for the option to disable DSC. (essentially force the PC not to use it, just to try and get video output, and work from there to try and get the higher refresh rate). I proceeded to turn off the 'OC' feature from just one of the monitors. (brings it to 144hz instead of 160hz) and nothing changed. I then proceeded to try expanding the desktop to the third monitor (I always check to see if some little setting worked) aaaand my PC hard crashed. I rebooted, went to grab some water and logged in. TO MY SURPRISE all three monitors turned on and nearly heckin' blinded me. I am still in shock. I have tried turning off the OC before, and have even set it to lower hz (to no avail) so why it worked this time is a complete mystery. If this is what it will take to get all three going, by sacrificing 16fps, that is a trade I am very willing to make. I would also just like to say thank you to everyone who took the time here to reply today. Your input was extremely valuable, and the enthusiasm I saw here was enough to get me to at least start tinkering with the setup again. TASK ORDER: COMPLETED.
Sir_Sizzle77 congradulations. Was it the main 27GN950-B you lowerd the clock on? I also had to go from 144hz to 120hz to keep my monitor from flickering and off once in a while.
kraadeGlad you found something that worked, what resolution are you running now and is it in surround?
HoggleGlad to see this resolved. Sad that the original post mentioned Meatloaf given his death, but it's a reminder of how impactful his music was.