Keyboard stops to work on linux VM

Hello!

I have some VMs using different linux distributions.

By some unknown reason the keyboard stops to work, i.e., backspace, arrows, ctrl and other keys won't work. I only can type in letters and numbers.

This only happens on Linux VMs, i also have some different Windows VMs and keyboard is ok! I change for the console window of Windows VMs and keyboard works ok!

Any idea for resolving this issues??

Thanks! :)

VF