How to Fix Panic(CPU 2, NMIPI for unresponsive processor
Graphics issues usually stem from an unsupported GPU, missing acceleration patches, or incorrect boot arguments.
Quick Fix Steps
- Verify GPU support: Check if your GPU is natively supported via WhateverGreen docs.
- Update kexts: Ensure Lilu and WhateverGreen are current.
- Check boot arguments: Add
-v keepsyms=1 debug=0x100for debugging, oragdpmod=pikerafor AMD. - Test Metal: About This Mac > System Report > Graphics.
Verification
- Graphics acceleration is smooth.
- Metal is reported in System Information.
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Original Question: "Panic(CPU 2, NMIPI for unresponsive processor"
Hi this is my first time trying to make a Big Sur hackintosh.
While trying to boot off the install usb about 40 minutes in I get this panic message
Panic(CPU 2, time 2522870762118): NMIPI for unresponsive processor: TLB flush timeout, TLB state:0x0
I couldn’t find anything on this subreddit like it or in the guide. Any ideas?
Parts: CPU- i9-9900k
Mobo- asrock z390 pro4
Gpu- red dragon rx 5700
Opencore 0.6.4 with latest kexts as of today
Thanks in advance
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