We have a Lenovo TS P340 workstation running Windows 10 with a NVIDIA Quadro P1000 card driving 4 x LG 49UH7F monitors, currently using Full HD @ 60Hz resolution, connected via mini-DP to DP cables. Both the LG monitors and cables are capable of 4K @ 60Hz. We are trying to change the monitor resolution from FHD @ 60Hz to 4K @ 60Hz but NVIDIA Display Manager only shows 4K @ 30Hz option. The Quadro P1000 datasheet states the board should be able to drive up to 4 monitors at 4096x2160 @ 60Hz. What are we doing wrong?
Thanks for any help.
Mauricio
Just to add more information, the TS P340 workstation has a fifth monitor (Legion Y25 - FHD@60Hz) connected to the UHD Intel® 630 Graphics DP port. In total we have 5 monitors, 4 of which are capable of 4K@60Hz (connected to the NVIDA Quadro P1000) and one capable of FHD@60Hz (connected to the additional embedded Core i7 Graphics port).
We are running Windows 10 latest patch and NVIDIA production driver downloaded from NVIDIA site (R535 U7 (537.58)).
Thanks for any help solving this.
Regards
Mauricio
DP has a bandwidth negotiation protocol, so being offered a lower than expected resolution/refresh is usually an effect of failing to negotiate the required higher bandwidth for the max. resolution/refresh=bandwidth.
can you try a different cable?
The mini-DP to DP cables / adaptor is potentially only capable of 4K @ 30Hz, many of these on the market are along with USB-C to DP, always worth checking the spec on the packaging before purchasing having been caught out once myself, always check now.
Hello Damian
Thanks for your reply. You mean check the mini -DP to DP cable spec for 4K @ 60Hz, correct? The cables I’m using are supposedly rated for 4K@60Hz ( 4K Mini DisplayPort to DisplayPort Kxable Cable 20FT, [4K@60Hz, Gold-Plated Plugs, Nylon Braided]). Is there any way NVIDIA software would “flag” the 30Hz limitation due to the cable interconnect?
Thanks
Mauricio