My Yubikey works fine when I have only MacOSX running, but if I start up a VM (in my case, Ubuntu desktop) it will rapidly flash green, continuously. According to the manual this means:
3.5.3 Device enumeration or error condition – rapid flashing
During USB device enumeration process, the LED flashes rapidly with a rate of approx 4 Hz. The quick flashing also occurs when an invalid operation is triggered, such as trying to trigger an un-configured OTP configuration.
I have found a workaround so that I can use the key: suspend the VM, insert the key, resume the VM. However, I sometimes need to use the key 10+ times a day and I can't leave it plugged in because I'm often not physically near the machine. Suspending and resuming the VM is not a long term workaround.
Crucially this problem only began after upgrading to Fusion 6.0.2. I'm running OSX Mavericks, fully up-to-date on system updates, on a MacBook Pro purchased a few months ago.
Though I suspect this is a bug in Fusion, can anyone point to a setting I can tweak to avoid this behaviour, or a better workaround? Thank you!