Kernel panics/Bluescreens with cstates on AM5
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=25508
Printed Date: 01 Aug 2025 at 5:28am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Kernel panics/Bluescreens with cstates on AM5
Posted By: justarandomname
Subject: Kernel panics/Bluescreens with cstates on AM5
Date Posted: 20 Feb 2023 at 11:48pm
Hello, i have build myself a new system with the following components:
- Ryzen 9 7950x
- asrock x670e PG Lightning
- 2x 32gb Kingston fury beast (5600 mhz)
- rx570 8gb
- 850w PSU from bequiet
The problem is that i get kernel panics (with linux) and bluescreens (with windows) on every boot if i dont disable "global cstate control" or boot with "processor.max_cstate=1" or "acpi=off" as kernel parameter.
I already tried different BIOS versions (including the beta ones, currently on 1.14.AS06) but to no success.
I am currently on Gentoo Linux with the 6.1.2 Kernel (updating to 6.2 atm) and amducode/microcode_amd_fam19h.bin compiled into the kernel.
Any ideas what the cause of this issue could be?
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Replies:
Posted By: justarandomname
Date Posted: 21 Feb 2023 at 12:03am
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Updated the kernel to 6.2 but the issue still persists
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Posted By: justarandomname
Date Posted: 21 Feb 2023 at 1:23am
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Tried to install Windows 10 on a spare drive, same result, windows will only boot with cstate support disabled (even with all drivers installed)
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Posted By: Katana1074
Date Posted: 21 Feb 2023 at 4:56am
Hi there sounds very similar to this thread :
https://forum.asrock.com/forum_posts.asp?TID=25386&title=x670e-taichi-cant-run-stable-with-acpi-cstates" rel="nofollow - https://forum.asrock.com/forum_posts.asp?TID=25386&title=x670e-taichi-cant-run-stable-with-acpi-cstates
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CPU: RYZEN 7950x | Motherboard: ASROCK X670E TAICHI | GPU: MSI RTX4090 LIQUID X 24GB | RAM: FURY X DDR5 C40 | Hard Drive: INTEL OPTANE 900P 480GB,1 x SAMSUNG 980 PRO 2TB,2 X ADATA S8200X 2TB
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Posted By: justarandomname
Date Posted: 21 Feb 2023 at 11:52pm
Yes seems like it, im gonna RMA it and hopefully get a working replacement...
Thanks for your help
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Posted By: EEPS
Date Posted: 22 Feb 2023 at 1:01am
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New BIOS was just released, I would try that first, as well as re-seating CPU, testing each stick of RAM individually, but if that does nothing then ya, RMA time.
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Posted By: justarandomname
Date Posted: 01 Mar 2023 at 7:17pm
Couldnt try the new BIOS since i RMAed the CPU a few hours before your comment...
Anyway the new CPU fixed my issue
Thanks for your help
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