I updated High Sierra (10.13.5) while maintaining setting guided by the previous X99 (SMBIOS MacPro 6,1), NOT by iMac Pro 1,1.
I also updated the recent Nvidia web driver and for the time being, the graphic driver is working well. However, sometime later, the graphic driver is returned to default driver. Even I tried to select NIVIDA web driver at the NVIDIA driver manager.
I tried in the ways suggested in this guide, but it does not work. Even I uninstalled the Nvidia driver and reinstalled it. but it fails.
Would you help me to solve?