Kernel panics/Bluescreens with cstates on AM5

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   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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justarandomname Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 20 Feb 2023 Status: Offline Points: 95	Post Options Post Reply Quote justarandomname Report Post Thanks(0) Quote Reply Topic: Kernel panics/Bluescreens with cstates on AM5 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?

justarandomname Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 20 Feb 2023 Status: Offline Points: 95	Post Options Post Reply Quote justarandomname Report Post Thanks(0) Quote Reply Posted: 21 Feb 2023 at 12:03am
	Updated the kernel to 6.2 but the issue still persists

justarandomname Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 20 Feb 2023 Status: Offline Points: 95	Post Options Post Reply Quote justarandomname Report Post Thanks(0) Quote Reply Posted: 21 Feb 2023 at 1:23am
	Tried to install Windows 10 on a spare drive, same result, windows will only boot with cstate support disabled (even with all drivers installed)

Katana1074 Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 31 Dec 2022 Status: Offline Points: 1325	Post Options Post Reply Quote Katana1074 Report Post Thanks(0) Quote Reply 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
	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

justarandomname Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 20 Feb 2023 Status: Offline Points: 95	Post Options Post Reply Quote justarandomname Report Post Thanks(0) Quote Reply 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

EEPS Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 30 Dec 2022 Location: California Status: Offline Points: 280	Post Options Post Reply Quote EEPS Report Post Thanks(0) Quote Reply Posted: 22 Feb 2023 at 1:01am
	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.

justarandomname Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 20 Feb 2023 Status: Offline Points: 95	Post Options Post Reply Quote justarandomname Report Post Thanks(1) Quote Reply 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