The TightVNC don't supports anymore Intel KVM for firmware version 9? I have a machine with fw version 7 and I can get remote access using Tight, but in version 9 I always face a timeout problem.
With Real VNC (only Intel KVM connection mode) works perfectly.
Supported libraries for Intel AMT KVM are listed here: https://software.intel.com/sites/manageability/AMT_Implementation_and_Reference_Guide/default.htm
For more complete information about compiler optimizations, see our Optimization Notice.