In Mac Pro 3.1, It have the sleep problem with any adapter existed on the PCIe slot.
It will hang on the video driver for Nvidia graphic adapter. We put LSI SAS host adapter which has default driver on the Mac OS x. It will show the same freeze in the sleep mode and needs to be hard restarted. If we swap the Graphic board from Nvida to ATI brand, the problem will be disappeared.Tags: ARC-1880ixl, driver, Mac, Mac Pro, PCIe, SAS, sleep mode