one of my thunderbolt ports stopped working. I used the SMC and PRAM reset and they all worked afterwards. thanks!
it worked! and, if you want your startup sound back on the iMac Pro, use this terminal command:
sudo nvram StartupMute=%00
thanks a million for this. i accidentally erased the boot partition, bought another one on eBay with a defective audio channel and switched the memory board: eureka! i’m happy listening to my tunes again!
will it blend?