Big Sur Public Beta 2 kernel panic

[global6000]

Have you tried the troubleshooting tips from https://dortania.github.io/OpenCore...bleshooting.html#stuck-on-eb-log-exitbs-start
the last entry on your file is 14:134 00:004 AAPL: [EB|#LOG:EXITBS:START] 2020-08-24T04:08:12

per the guide:
SetupVirtualMap set true could cause some firmware to KP. you might try setting this to false

Thanks for the info. But yes I have already tried that with no success. I have however since fixed the issue. I followed the guide at this web site:

AudioGod's Aorus Z390 Master Patched DSDT EFI for Catalina Mini Guide and Discussion

I have put together this simple little guide for anybody wanting to use a Patched DSDT EFI with the same configuration as me. This is also a thread to discuss everything Z390 Master and try and help where we can and maybe make things a little better for you. A huge massive thank you to @glasgood...

www.insanelymac.com

Not sure which item solved the problem. I installed a new beta version Bios 11k because the version 11e supplied with this post still did not boot. I suspect it may have been the Bios.
But I also changed my whole EFI to the downloadable one in the post. The config has a few small changes, but the biggest change is going from 5 SSDT down to only 2. With this new EFI I can run Catalina and Big Sur. They are both more reliable now, and my old problem with Catalina seems to be solved as well. Before when booting Catalina it could take 3-6 boots to not get a black screen even with "pikera". Now both boot quick about 14 sec with no problem and sleep is good on both.

Thanks all for your assistance.

 

[elskankinloco]

That’s great you got it working!
Thanks for the update.