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[Updated] Stork's Thunderbolt Build: i5-3570K | GA-Z77X-UP5-TH | GTX 760

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What could be causing this issue?
Have you tried increasing the DVMT pre-allocation setting in the BIOS ? If not try increasing that and see if it helps.
 
I just checked the BIOS & there are 3 settings: 128, 256, & MAX. It is on MAX by default already.
What is the Intel graphics vram setting set to ?
 
What is the Intel graphics vram setting set to ?
What setting have you found to be the best? I have had a terrible time trying to get Quicksync to work correctly. My computer will crash eventually if not often when working with FCP X and having Quicksync on.
 
What setting have you found to be the best? I have had a terrible time trying to get Quicksync to work correctly. My computer will crash eventually if not often when working with FCP X and having Quicksync on.
Seems that 64MB works in most scenarios. Sometimes it will require 96MB it all depends on all the specific hardware that is installed in the system. On the lower end 32MB is usually too low. Takes some experimentation to figure out the best setting. On my older Sandy Bridge Z68 system 64MB works best. That is most stable at that setting, newer builds will often need it set higher. When setting it higher you should have a minimum of 8GB of ram or it won't work well. Most people here seem to start with at least 8GB of system ram or more. 16GB (2 x 8GB) is the sweet spot for price / performance.
 
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Seems that 64MB works in most scenarios. Sometimes it will require 96MB it all depends on all the specific hardware that is installed in the system. On the lower end 32MB is usually too low. Takes some experimentation to figure out the best setting. On my older Sandy Bridge Z68 system 64MB works best. That is most stable at that setting, newer builds will often need it set higher. When setting it higher you should have a minimum of 8GB of ram or it won't work well. Most people here seem to start with at least 8GB of system ram or more. 16GB (2 x 8GB) is the sweet spot for price / performance.
I tried that as well. The issues that I would have is that with the iGPU active the machine would reboot itself under intense h.264 playback; i.e. FCPX. I have 32GB of RAM on the machine and tried all the way to 1028MB with errors creeping up eventually. I really like this machine and would love to have it running with HD4000 and dual GPUs. That made it a wonderful machine for editing videos with FCPX and I would like to have this available to me again. Any additional help is appreciated.

I will also add this: I used the iGPU in both headless and as a stand alone GPU in the system. Even then it had issues. I am thinking it may have been the versions of LILU and Whateversgreen kexts that were my issues. What is your thoughts on all of this? Thank you.
 
To people like me who could only get DisplayPort working on RX 580, the CSM settings in the BIOS were more tricky than I thought. I always had OS set to "Other OS". Since I bought this thing 7 years or so ago. So I forgot about the fact that the CSM setting disappears when OS is set to "Other OS". You need to change the OS to "Windows 8". (you can leave it here too, it works fine - Windows 8 WHQL is for testing purposes so there's no reason for us to use it.) Then the CSM setting will appear which you then of course disable. I thought there was no CSM setting on this board the whole time.......doh!

After that, then all outputs work (2 DP, 2 HDMI, 1 DVI). I have the Sapphire Pulse RX 580, BTW, (think it's v2). Despite it being natively supported, on one of the Mojave updates, they changed the framebuffer to have 6 outputs so I made a framebuffer patch for our card. Just paste this into your Kernel and Kext Patches in your clover config.plist:

Code:
<dict>
                <key>Comment</key>
                <string>Sapphire Pulse Radeon RX 580</string>
                <key>Disabled</key>
                <false/>
                <key>Find</key>
                <data>
                AAQAAAQDAAAAAQEBAAAAABIEBgEAAAAAAAQAAAQDAAAA
                AQIBAAAAACIFBAMAAAAAAAgAAAQCAAAAAQMAAAAAABEC
                AQIAAAAAAAgAAAQCAAAAAQQAAAAAACEDBQQAAAAABAAA
                AAQAAAAAAQUAAAAAAAAAAwYAAAAAAAQAAAABAAAAAUYB
                AAAAACABAAAAAAAA
                </data>
                <key>InfoPlistPatch</key>
                <false/>
                <key>MatchOS</key>
                <string>10.14.x,10.15.x</string>
                <key>Name</key>
                <string>AMD9500Controller</string>
                <key>Replace</key>
                <data>
                AAQAAAQDAAAAAQEBAAAAABIEAQEAAAAAAAQAAAQDAAAA
                AQIBAAAAACIFAgMAAAAAAAgAAAQCAAAAAQMAAAAAABEC
                AwIAAAAAAAgAAAQCAAAAAQQAAAAAACEDBAQAAAAABAAA
                AAQAAAAAAQUAAAAAABAABQYAAAAAAAAAAAAAAAAAAAAA
                AAAAAAAAAAAAAAAA
                </data>
            </dict>

Attached is the original file with the research and stuff. This patch above works for latest Mojave and Catalina, BTW.
 

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I want to install Mojave per post #1. When I go to the Mac App Store, I am only offered Catalina. Do you have a link so I can download Mojave for my UniBeast install?
 
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