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Nvidia web drivers causing instability on my h170-dh3p i7 6700 rig

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Feb 10, 2014
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Motherboard
Gigabyte GA-H170-D3H9
CPU
i7-6700
Graphics
GTX 970
So I've built my rig a week ago now and have spent that week pretty solidly working through issues to try and reach a point where I can declare my build stable, install my video editing, grading and motion graphics software and be a happy camper.

However, since the very beginning, there's been a consistent issue which is getting the Nvidia web drivers to work correctly with my GTX970 graphics card. I actually have succeeded in that endeavour, many times in fact, but the problem is that it's been necessary to do this many times, because as I work through other issues, it keeps breaking again and now it's the final damn straw because yesterday I switched my machine off, at it's currently most stable state with the intention of resuming work on it today while I try to work through the latest piece of functionality I want working. When I shut down, the machine worked very well and so did graphics, when I turned it on today, it failed to boot, I can now only boot if doing so from the USB installer's UEFI clover partition first, or if I uninstall the Nvidia Webdrivers. This makes absolutely no sense to me because the machine was off all day until now when I turned it on and suddenly the same webdrivers that were apparently fine, are poison for it. I anticipated hackintosh would be a challenge but this build has been a hell of an ordeal so far. I really hope people might know how to help me here because I'm about out of ideas.

My build is:

  • Mobo: Gigabyte H170-D3hp
  • CPU: core i7 3.4Ghz 6700 Skylake
  • PSU: 600W Thermaltake bundled case PSU
  • GPU: Galax Nvidia GTX970
  • Boot drive: Samsung 850 EVO 500GB SSD
  • Additional Storage: Two mechanical seagate 3TB 3.5" 7200 rpm drives
  • OS: El Capitan 11.6
Build approach:

I mostly used this guide: http://www.tonymacx86.com/threads/10-11-0-10-11-3-skylake-starter-guide.179221/

in combination with this video:

and a large variety of guides and forum posts from Tonymacx86 and ******/r/hackintosh.

Issues:

Initially I could not get sound working and the graphics had a few minor problems.

Fixes:

I fixed sound by following information in this guide http://www.tonymacx86.com/threads/no-audio-devices-realtek-alc-applehda-guide.143752/ and this guide http://www.tonymacx86.com/threads/audio-realtek-alc-applehda-guide.143757/#post886744 which ultimately led me first undo any existing sound fixes I may have don in the process of following the http://www.tonymacx86.com/threads/10-11-0-10-11-3-skylake-starter-guide.179221/ and youtube video I'd been using and then installing the intel 100 series realtek kext via multibeast, and then inserting the audio id '2' in to the audio devices section in clover configurator.

The above fixed sound, but caused me to be unable to boot unless I disabled the nvidia webdrivers. After much frustration I discovered that changing the smbios settings the 3,1 via the clover configurator fixed the issue (don't get why this mattered since it didn't before and since I'd already set the system profile to 3,1 via multibeast at the start).

Next issue was that the usb 3 ports stopped working, and additionally I don't think they'd ever had their full speeds. I did this using modifications to the config plist mentioned in the http://www.tonymacx86.com/threads/10-11-0-10-11-3-skylake-starter-guide.179221/ whereby I changed the port limit from 15 to 30 and by adding the usbinjectall kext in to clover's 'extra' folder of my ssd's EFI partition.

At this point I pretty much had almost everything I wanted, but I noticed that some apps I wanted to install were crashing when I tried to run them and also, I realised I still needed to install cuda drivers separately to my gpu web drivers. I installed the CUDA drivers, and tested using them using DaVinci Resolve. Hard to say for sure but I have good evidence to suggest they were being used, because before I installed them, Resolve refused to open a project and said it couldn't detect a CUDA card and after installing, it opened. However, I now could no longer boot from the SSD's UEFI partition after installing those drivers. I had to boot using the USB again, and remove the drivers, after that I could reboot stables, but obviously, still wanted to know how to get my CUDA drivers installed. At that point at least, I was definitely abel to boot and my prior fixes were all DEFINITELY working. I called it a day, and shut down the machine. Now as of this evening, the next day, I can't boot anymore except using the USB, or if I fully uninstall the web drivers (even with boot flags suppressing them). This is infuriating and so disheartening because I thought I at least had reached a certain point and could work from there. This just undid EVERYTHING. What the hell is going on?
 
I suspect no one else will run in to this because it's too specific to me but it seems diligent to write down the resolution just in case there's another one in a million case.

I still don't technically know what actually happened here but, I think I figured out how to fix it and the general root cause if not the specific mechanisms at play.

Basically during the long odyssey getting my Hackintosh to a stable state summarised above there were many different fixes and things tired and abandoned. I was aware of the possibility of conflicting fixes and tried to be careful to keep a track and to undo failed fixes before trying others. However there was something else going on I never realised.

A couple of times during this whole process, I reached a point where I found it necessary to fully and completely reinstall the OS because just nothing was working. This seemed to give me a clean slate to try things again from but what I didn't realise was the my UEFI partition was remaining completely unchanged this whole time. I thought I was starting all over but it was exactly the same. Some fix or change or something somewhere along the line must have represented the final straw.

I don't know what made the system decide it couldn't boot now all of a sudden after being okay the night before but I finally figured out to repartition the SSD to a single partition MacOS journaled in disk utility when booting from the installer USB as well as taking the step of erasing it after just to be sure and that seemed to have properly completely wiped and remade my UEFI partition and the clover install. This has allowed me to re-implement my fixes in an ordered manner and steady the system. Things seem to be working now, even Premiere Pro.
 
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