Recently I wanted to lower power when system is idle, I enabled c-states in bios and booted unraid.

After a seemingly random period of time (1-6hours or so), the server will reboot and the cycle continues, disabling c-states and no reboots occur. Im not sure how to best diagnose this problem further.

 

Motherboard: Gigabyte Technology Co., Ltd. Z790 AORUS ELITE AX DDR4 -- On latest BIOS

CPU: 13th Gen Intel® Core™ i5-13500

RAM: 2x 16GB DDR4 Corsair Vengeance LPX

PSU: Corsair RM750x (2021 ver)

Disks: 2x WDC_WD101EFBX

NVME: 4x WD_BLACK_SN850X_1000GB -- On latest firmware

SATA SSD: CT1000MX500SSD1 -- On latest firmware

tower-diagnostics-20240427-0745.zip

Look for a BIOS update for the board.

On 4/28/2024 at 2:10 AM, JorgeB said:

Look for a BIOS update for the board.

Hi Jorge,

 

Thank you, yes I've been running the latest BIOS for a few days, it has been better but still unstable with c-states enabled. Enabling Native and Platform power everything is stable but once I enable c-states (turn everything from auto to enabled) and the disks spin down and the system starts to go into high c-state a reboot will eventually happen. Even turning on power loading, the system will still eventually reboot.

 

System without any power saving turned on - Stable 4months

System with Native ASPM and Platform Power enabled - stable 2 days so far

System with c-states enabled bios from dec, instant crash when disk spin down

System with c-states enabled latest bios as of April 23rd 2024, random crash (1-7hours) after disks spin down.

 

I guess its either a Motherboard issue (BIOS bug or hardware) or a CPU issue.

Submitted inquiries to motherboard and cpu manufactures.

35 minutes ago, zac_ary said:

I guess its either a Motherboard issue (BIOS bug or hardware) or a CPU issue.

Tend to agree, newer kernel may also help, since it will have better support for that hardware, you can retry with v6.13 once it's out.

Have you solved the problem with C States or are they still disabled? 

I'm in the exact same situation, same processor, motherboard and amount of ram.