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Oups missed it...Head banging smiley then, this one is definitely missing and I could have used it a few times :p I did two cold boots since making the changes. One just a few seconds after shutting down and a second one 10 minutes after shutting down and.... I finally had no reboot/panic combo...

Latest PR files.... you should add a crossed fingers smiley :p

SMBIOS info are not missing, I remove them out of habit when posting my EFI folder ;) I will apply the changes to the plist, delete preference files, reset NVRAM twice and post a new set fo PR files

750w Ordered the cable from Dell

And the PR files Thanks:)

Yes I reset NVRAM twice after making all BIOS changes and before rebuilding the cache and then shutting down the pc and disconnecting the PSU. I'm using DP. There are 3 DP and 1 HDMI port and I use the one furthest from the hdmi port; maybe I should try another DP port? Let me prepare the PR files

ok, so BIOS settings are set as you suggested a few posts above with TB disabled, also TB related SSDTs in the ACPI folder are disabled. Kextcache rebuilt and power drained done again. I booted the computer and everything booted without an issue, OC then MacOS. So I tested a cold boot and turned...

I have just noticed something about Thunderbolt (note that I still have dtgp.aml and SSDT-TB3.aml files in my ACPI folder). Usually it is disabled with default settings so I didn't check after reseting BIOS but now it's enabled but not with the settings I had set previously. before after...

Dortania's OC installation guide which I was using up to now seems so outdated... or is it because it's more intended for laptops even if there is a desktop section? One other question if possible, specifically on hibernate mode (hope I'm not off topic:)). The default value is set to 3 (also on...

I'm back, Ok I will not enable TB for the moment and wait for tomorrow as freezes are only happening on cold boots now. If there are no issues, I will enable XMP bios and adapt other BIOS settings based on the video if they are present in the bios version my MB uses of course. Thanks!

PS: about Thunderbolt; not yet I'm still trying to make it work but I have no device to test but I'll post more about that in the appropriate thread later

Just these? Nothing more? Can I at least keep XMP enabled to have RAM at full frequency? what about CSM do I need to disable it? I think it's enabled in default settings I'll first try to see if using proper BIOS settings works, if not.... I guess I'll have to attempt the flashing and hope for...

To which settings? I checked your "BIOS/UEFI Settings for Desktop (Intel/AMD)" but there's nothing there I'll try with the procedure I found, hope I don't mess up my GPU

Here are pictures of my BIOS (also CSM is disabled) About flashing the VBIOS, can it be done under MacOS or is it better to do it under Windows? And would you recommend a guide for VBIOS flashing? I found this one with Google but maybe you have a better recommendation? Thanks!

Yes on a cold boot. It freezes while MacOS is loading, the bar under Apple logo will start loading and it will freezes. I then need to do a hard reboot and MacOS will load and generate the panic file I've attached in my previous post. I'll provide pictures of the BIOS setting, any section I...

Hi there, After running the system for two days following your help and applying all your advices everything is definitely more stable, thanks a million! The system never froze while in use after tweaking the EFI :D but I'm still experiencing a freeze when booting the system in the morning...

Hi there, I'd like to enable the motherboard's onboard Thunderbolt 3 port (single card with OG firmware) so I downloaded the ASRock Z490ITX/AC aml file and just edited PCI0 to PC00 as the configured port is the good one (RP21 / PXSX) and named the file TB3.aml so that should be ok. Further...

I'll try to isolate the reboot reason and take it from there :) Had a look at a copy of yesterday's IOReg (pre patch) and today's with Rename PEGP to GFX0 and it looks similar... did the patching work? Before after

Hi there, actually sleep is not off topic as before adding the dGPU so only using UHD 630, The system had no freezes and sleep was working properly. I went through the guide "how to create OC config.plist" and for Comet Lake it mentions that "Sleep/Wake function is broken on Comet Lake...

Hack went to sleep but when trying to wake it with a mouse click it rebooted, so sleep is still bothering and I have disabled it again. Will now see if the system freezes while under use