Since today, the sleep function is no longer working on my Mac Pro.
It is a 4.1> 5.1 6 core Westmere 3.33 Ghz with Nvidia Geforce 980 and USB3 card AppleUSBEHCIPCI and an OWC SATA III card. The MacPro runs the latest version of Sierra 10.12.6 and uses the last web driver for the graphics card.
When I choose the "Sleep" command, the screen turns black but the Mac does not go to sleep.
I have tried the following:
1) SMC reset
2) NVRAM reset
3) disconnect all USB devices
4) log all users out and then choose the sleep command
(I do not use applications such as bittorrent)
If I start from another SSD with High Sierra, the problem does not occur. But I mostly work with Sierra because, for example, Parallels 11 and High Sierra are not fully compatible.
Can someone give me advice?
TIA
It is a 4.1> 5.1 6 core Westmere 3.33 Ghz with Nvidia Geforce 980 and USB3 card AppleUSBEHCIPCI and an OWC SATA III card. The MacPro runs the latest version of Sierra 10.12.6 and uses the last web driver for the graphics card.
When I choose the "Sleep" command, the screen turns black but the Mac does not go to sleep.
I have tried the following:
1) SMC reset
2) NVRAM reset
3) disconnect all USB devices
4) log all users out and then choose the sleep command
(I do not use applications such as bittorrent)
If I start from another SSD with High Sierra, the problem does not occur. But I mostly work with Sierra because, for example, Parallels 11 and High Sierra are not fully compatible.
Can someone give me advice?
TIA
