| Starting with High Sierra, macOS implements VT-d (virtualization technology for directed IO) more aggressively than previously, and this breaks the P2 driver. As a workaround, you can turn off VT-d, but it will probably stop Parallels and Fusion VM systems from working.
In Terminal, enter
sudo nvram boot-args="dart=0"
then reboot.
After Sonnet releases a driver that is compatible with the 10.13 implementation of VT-d in Thunderbolt 3 Macs, you can re-enable VT-d by entering in Terminal:
sudo nvram -d boot-args
then reboot. |