Watch my patch fix problem https://www.tonymacx86.com/threads/nvidia-geforce-9400gt-on-sierra-not-works-ok-kernel-panic-nvdastartup-kext.206208/page-2#post-1793409
macOS 10.13 beta 4 Release Notes - PDF https://drive.google.com/open?id=0B2j4-ZfQbzOxS3pkM05QUjdfTGs
QuickLook
Known Issues
• On a MacBook Pro with both discrete and integrated GPUs, using QuickLook to preview content forces the system to switch to the discrete GPU.
Workaround: In Terminal run...
I have sound but. I installed last update 10.13 Beta 4 (17A315i) not works play mp3 space key - Quick Look. You also that error issue? I have 2 disk (backup test) with 10.13 beta 4 and error also :/
I have question. Is support system files APFS for HDD disk partitions? I have now partition in HFS+ with my data (not is boot macOS), disk is schemat GPT GUID. I will have conversion or format partition HFS+ to APFS.
I solved the problem, now the graphics card full work on Sierra. I deleted my kext problematic /System/Library/Extensions/NVDAStartup.kext, and installed NVDAStartup.kext of El Capitan (10.11.6), rebuilt again kernel cache, and i have also placed copy kext /EFI/CLOVER/kexts/10.12/...
Nvidia GeForce 9400 GT works OK with Sierra? El Capitania and legacy systems worked OK with this card. It seems that with the Sierra Apple could remove support for this card, because it is a very old card and Apple introduced the generally higher requirements for Sierra
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