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I have two systems sharing a KVM. The first system is Ubuntu 12.04 and the second system is CentOS 5.8. When I switch to the the Ubuntu system, the mouse is available right away, but when I switch to the CentOS system, it takes about 10 seconds for the mouse to be available.

Do you have any suggestions wrt decreasing the 10s time it takes CentOS to find the mouse ?

I'm just looking to decrease the time it takes CentOS to find new USB devices in general, so I don't think setting "options usbhid mousepoll=2" is the right answer.

Thanks !

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There are 4 different types of KVM switches regarding the core technologies they used. Normally, both low-end USB HUB type or Emulated-type KVM switches will cause some latency depending of connected systems' OS accordingly.

The only "no latency" KVM switch technology is called DDM KVM (Dynamic Device Mapping) - which learn the USB HID devices you want to share initially then mapping the shared devices to each connected channels - just like have dedicated devices always connected to each systems, so there will be no latency when you switching between/among channels.

Please google "class of KVM switch" or "DDM KVM switch", you should find many DDM KVM switches available.

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Please check the link of "Class of KVM switch" in Wikipedia. It has very clear comparison table among different classes of KVM switch. – Rex Wu Feb 24 '13 at 8:56

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