Fault in sleep mode
econd, sometimes the computer has essentially crashed. No key will wake the system and tapping the power button does nothing. Instead, I have to hold the power button for like 10 seconds in order to force the system to truly shut down. Then a single tap of the power will boot the system. This has become very annoying, as it basically happens every day, particularly when I first go to the computer in the morning. Nothing posted in the other threads seems to work. I have reset the SMC. And no fix. I have also tried to reset the PRAM, but the instructions online don't seem to work for an iMac Pro. So I'm not sure whether I've actually reset the PRAM. I have also altered the settings under Energy Saver. Toggling the "put hard disks to sleep when possible" does not fix the problem. Toggling "Enable Power Nap" on or off does not fix the problem. I've constantly had "Wake for network access" toggled. The only thing that prevents this from happening is forcing the computer to never sleep, by selecting "Prevent computer from sleeping automatically," which of course is no solution at all. I'm running a pretty vanilla system. I have Adobe CC suite installed, dropbox installed, and I used carbon copy cloner to back up my SSD once a day. OS is the latest (10.13.6). I do have an external hard drive connected (g-drive), but my recollection is that I had the no-wake problem even when the drive was not connected. Any help would be greatly appreciated. Hopefully it's just a software bug somewhere. I'd hate to have to lug this thing back to Apple.
iMac 21.5″, macOS 10.15