EVGA

GTX 1080 FTW and CKLau KVM help

Author
Nrublim
New Member
  • Total Posts : 2
  • Reward points : 0
  • Joined: 2022/11/29 20:50:33
  • Status: offline
  • Ribbons : 0
2022/11/30 00:57:26 (permalink)
Howdy all,
I have two systems hooked up to a CKLau-642DP KVM going to two BENQ GL2460 monitors. The KVM will support up to 4 systems going to 2 monitors with DP1.2 video ports in and out. The monitors are connected to the KVM with DP -> DVI cables.
 
One system is my work laptop connected through a Dell thunderbolt docking station with DP -> DP cables to the KVM. This works fine, I can use both monitors plus the laptop screen with this setup.
 
The other system is my personal PC in which I just installed an EVGA GTX 1080 FTW ACX 3.0 GPU (PN: 08G-P4-6286-KR) that a friend gave me. I connected it to the KVM with DP -> DP cables but get no display on either monitor. I can connect both monitors directly to the GPU with DP -> DVI cables and they both work just fine. I have done a clean install of the NVIDIA drivers. I checked the resolution (1920x1080 native) and refresh rate (60 Hz) on both monitors while connected directly to the GPU. I have changed the DP cables. I have swapped the ports each computer is connected to on the KVM. I have powered down everything and restarted according to the KVM switch manual (KVM first, then monitors, then computers). Nothing will get the PC with the GTX 1080 to work through the KVM. I can connect the monitors directly to the GPU and use the keyboard and mouse through the KVM so that works. But if I want to use the monitors with the laptop I have to switch cable around each time which defeats the whole purpose of the KVM.
 
The PC originally had an MSI GTX 970 that I connected to the KVM with two active DVI -> DP cables to the KVM and it worked fine. This GPU only had one DP, one HDMI and two DVI ports which is why I did it that way.
 
I'm really at a loss at this point. I can't believe there isn't a way to get this to work. I'm trying to communicate with the vendor I bought the KVM through, but they are giving me really basic suggestions which I had already tried to no avail. I'm really hoping someone here will be able to help me get this going.
 
#1

2 Replies Related Threads

    Nrublim
    New Member
    • Total Posts : 2
    • Reward points : 0
    • Joined: 2022/11/29 20:50:33
    • Status: offline
    • Ribbons : 0
    Re: GTX 1080 FTW and CKLau KVM help 2022/11/30 20:42:55 (permalink)
    The only thing I can think of is that the GPU is not recognizing that the video ports on the KVM switch are DP version 1.2 and is not downgrading automatically from DP 1.4. Is there a way to manually set the DP output to meet DP 1.2 instead of 1.4?
    #2
    wmmills
    CLASSIFIED ULTRA Member
    • Total Posts : 5659
    • Reward points : 0
    • Joined: 2006/01/04 20:47:29
    • Location: New Jersey
    • Status: offline
    • Ribbons : 40
    Re: GTX 1080 FTW and CKLau KVM help 2022/12/01 09:09:20 (permalink)
    There may be a reg tweak you can do and try to get that to work but you would have to bang around the reg yourself and figure it out, play games with settings etc.. Not the best idea really unless you can get a software guy to help ya with it. Did you try doing a cmos reset and then resetup your bios, NO FASTBOOT crap, with auto settings temporarily and see if it will get it working. Did you try rolling back the gpu driver to the same one as the 970 was using or close? DVI has no audio stream in it and the other two do so there may be some conflict goin there also. KVM's are only good for 1080p right? Do they go higher yet? I havent touched one of those since around 2008 maybe so its been awhile.

    MOBO: EVGA x299 Dark, CPU: I9 10900X, RAM: Patriot Viper RGB 3600 32gb, SSD: Samsung 860 EVO 1TB, M2: Samsung 970 EVO+ 1TB, PSU: CoolerMaster M2 1500, CPU HSF: EVGA 240 CLC HSF~ P/P EK Furious Vardar, G-CARD:EVGA RTX3090 FTW3 Ultra Gaming w/Hybrid kit and Noctua IPPC 3000 P/P, CASE: LIAN-LI PC-V2010B w/ Window mod, OS: Windows 10 Pro 64bit, MON: Alienware AW3821DW

     New EVGA product? Register it NOW with this link:
    http://www.evga.com/register/default.asp?affiliatecode=4QFQRAMOII
     Help Our Vets From K-2!
    [link=https://strongholdfreedom
    #3
    Jump to:
  • Back to Mobile