I recently purchased the 1.4 DP KVM switch with 3 monitors variant, and it’s been working great except for one very strange issue. Whenever I press “Caps Lock” on my keyboard, my mouse stops working until I restarted the Logitech G Hub App.
Here’s my current setup.
- KVM + Caldigit TS4 + MBP 2019 with macOS Monterey 12.2
- Both keyboard (Filco Majestouch 2) and mouse (Logitech Pro X Superlight) use the HID ports
- All 3 monitors are connected via DP cables, then TS4 picks up two monitors via Cablematters USB C to DP cables and another one goes directly into the MBP via another CableMatters USB C to DP cable
- No remapping
Moreover, the mouse doesn’t work on any of the USB 3.2 Gen 2 ports at all (both front and back). I tried to reproduce this same exact issue with another keyboard and that was working fine. I suspect that has to do something with the interaction between this keyboard-mouse pair. I did find a post on this forum titled “Issues with KVM + Keychron K8 + Logitech Pro X Superlight” (I can’t drop links here) that shared similar symptoms.
I also decided to try this on my Windows 10 PC and the problem still persisted, and I’m guessing I can isolate the OS change here.