VM - Keyboard flickering / stopp working

Hey, 

hopefully someone can help me or at least have an idea what can I try

I'm running Unraid 6.12.4 with everything updated. 

I'm also running a Win 10 VM (latest updates done) on it. 

This VM uses a passthrough Nvidia RTX 2060 Super with USB-C Ports (also passthrough to the VM) 

On this USB I connected a 10m USB extension kabel and an active USB Hub (this one here -> https://atolla.us/products/4-port-usb-hub-with-power ) 

On this hub the following devices are attached

• Plantronics Headset (with external power supply)
• Razor Basiliks V2 (wired)
• Steelseries Apex PRO TKL (wired)

For over a year it works fine. I might need to unplug/plug the keyboard when changing the USB hub from my unraid server to my MacMini. 

But this was totally fine for me. 

But in the last weeks my keyboard start flickering (RGB) and become unresponsive until I plugged it out and in again. It started even when I dont switch from VM to MacMini. When I unplug/plug it immediately starts working - but only for some minutes

In my (basic knowledge) of power mathematics I would now assume:

• The HUB provides 15Watt (5V/3A)
  • The headset got its own power supply = 0 Watts of consum
  • The Razor Basilisk consumes 200mW at 5V = 1 Watt
  • The Apex Pro TKL consumes 600mW at 5V = 3 Watt

So in total I need only 4 watts to power all of them. Why doesnt it work anymore  

Especially due to the fact, that the GPU also provides x-Watts of power to the USB-C port.

So it should be def. more power available than I would ever need. 

For the notes: The keyboard works fine when the USB hub is connected to my MacMini. No flickering, no outtages - just works. So an issue with the keyboard seems to be not the case. It must have something to do with Unraid or the VM itself - at least in my opinion. 

Highly appreciate every hint you can provide me. THX in advance. 

Edited October 31, 20232 yr by Maddeen