Ask HN: 3840x2160 120 Hz KVM
Requirements:
* 2-port, 1-monitor, DisplayPort 1.4 KVM
* Wired push button switch (and cable can be extended if needed)
* Runs at 3840x2160 @ 120 Hz (or 60 Hz), ideally 144 Hz
* Works with docking station (HP USB-C Dock G5 for business)
* Works with Classic 101 Black Buckling Spring USB keyboard
* Works with Logitech TrackMan Marble Trackball
* Works with HP laptop and desktop (NVIDIA T1000 GPU)
Anti-requirements:
* Does not intercept keystrokes (or can be disabled)
* Does not intercept mouse scrolling (or can be disabled)
* Does not randomly repeat keys
* Does not block certain keystrokes (e.g., ctrl+shift+t)
* Does not let Windows laptop go to sleep
* Does not take more than 3 seconds to switch between computers
* Does not randomly blank the screen
* Does not lock up the keyboard after switching
Here's the setup showing both computers and the push button switch:
* https://i.ibb.co/5nrDk21/kvm-setup.jpg
* https://i.ibb.co/hFsjT3S/kvm-switch.jpg
I have tried:
* IOGEAR GCS62DP (almost perfect; only 60 Hz; kills keyboard after ~60 swaps; RMA'd)
* DiamondTiger KVM Switch EDID 8K@60Hz, 4K@144Hz, DP 1.4 (repeats keys, blanks screen, has screen tearing, and many other issues)
* CanadaComputers iCAN HDMI USB KVM Switch 2x1 with Switch Extension 4K 60Hz (completely blocks certain keystrokes)
Wendell's Level1Techs Store offers a highly recommended KVM, yet lacks a wired push button.
What KVM switches "just work", in your experience, and have a wired push button for switching?
If I need to shunt a DisplayPort EDID feeder to prevent Windows from sleeping, that's acceptable, and a recommendation would be most welcome.