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system posted in safe mode after 10.15.4 Update

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Joined
Mar 31, 2010
Messages
310
Motherboard
ASUS Prime Z390-P
CPU
i9-9900K
Graphics
RX 5700 XT
Mac
  1. iMac
  2. MacBook Pro
  3. Mac mini
Mobile Phone
  1. iOS
RTC reset issue..
try this fix

RTCMemoryFixup.kext
boot-arg= rtcfx_exclude=00-FF
 
Joined
May 8, 2019
Messages
1
Motherboard
ASUS ROG Z390-E Gaming
CPU
i7-8700K
Graphics
ASUS ROG RX 5700 XT
Mobile Phone
  1. iOS
Having same problem too with random frequency. I installed RTCMemoryFixup.kext in EFI/CLOVER/KEXTS/OTHER and added boot argument = rtcfx_exclude=00-FF, still posting in safe mode.
 
Joined
Sep 21, 2010
Messages
169
Motherboard
ASUS PRIME Z390-A
CPU
i7-9700K
Graphics
Vega 64
Having same problem too with random frequency. I installed RTCMemoryFixup.kext in EFI/CLOVER/KEXTS/OTHER and added boot argument = rtcfx_exclude=00-FF, still posting in safe mode.
thanks for sharing. I'm hoping this work on an Asus z390-a too
-do I download the kext from here? https://github.com/acidanthera/RTCMemoryFixup
-I downloaded the zip but there's no kext. how do I create the kext?
-How do I know boot argument rtcfx_exclude=00-FF is the right offset for a Z390-A? is the offset the same for all z390-a's or is each hardware configuration unique?

I appreciate the help.
 
Joined
Dec 4, 2017
Messages
1
Motherboard
Asus Prime B360-M
CPU
i5-9400F
Graphics
RX 590
thanks for sharing. I'm hoping this work on an Asus z390-a too
-do I download the kext from here? https://github.com/acidanthera/RTCMemoryFixup
-I downloaded the zip but there's no kext. how do I create the kext?
-How do I know boot argument rtcfx_exclude=00-FF is the right offset for a Z390-A? is the offset the same for all z390-a's or is each hardware configuration unique?

I appreciate the help.
In order to download the kext, you have to go to the releases tab of that page. Here: https://github.com/acidanthera/RTCMemoryFixup/releases.
However, I still haven't tried it myself. My Motherboard is an Asus B360m-a, and I don't know which is or are the right offsets for it, or how to figure them out.
 
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