Thanks for joining the Graphics community.
I understand you are using a KVM switch that does not display proper screen resolution.
Please bear in mind that Intel does not provide assistance for KVM issues. You need to address this matter directly to your computer manufacturer.
The usage of KVM switches will limit screen resolutions; it might be locked at vbios.
I have been checking this information with our engineering team and this is their response:
"I believe that was caused by the KVM switch you have, that did not successfully feedback correct the display's EDID between connected PC and your display.
I suggest put an EDID emulator between connected display and console video port of the KVM switch. But before you do that, you need to have the emulator "clone" the correct EDID of your display first".