Good morning, everyone,

I hope you’re all doing well. I could use some assistance diagnosing an issue with my Unraid server. Until recently, it operated flawlessly, but over the past few days it has begun exhibiting freezes that I can’t pinpoint.

What’s happening:
During parity validation (synchronization), the system suddenly becomes unresponsive— the web GUI hangs, and I must perform a manual reboot to regain access as the server appears to “lock up.” Earlier today, it froze mid-parity sync, forcing me to restart the process from scratch. On that occasion, however, it recovered on its own without a reboot—but the array was unmounted and had to be manually remounted before normal operation could resume.

Troubleshooting steps already taken:

1. Checked all SATA and power cables.

2. Ran Memtest for 15 hours with zero errors.

3. Reformatted the USB flash device and reinstalled Unraid OS.

4. Recreated the arrays on a clean installation.

I’ve attached the relevant logs for your review. Any insights or suggestions would be greatly appreciated.

Thank you in advance for your help!

rabbit-syslog-20250714-1222.zip

Enable the syslog server and post that after a crash, also see this:

https://forums.unraid.net/topic/46802-faq-for-unraid-v6/page/2/#findComment-819173

36 minutes ago, JorgeB said:

Enable the syslog server and post that after a crash, also see this:

https://forums.unraid.net/topic/46802-faq-for-unraid-v6/page/2/#findComment-819173

36 minutes ago, JorgeB said:

Enable the syslog server and post that after a crash, also see this:

https://forums.unraid.net/topic/46802-faq-for-unraid-v6/page/2/#findComment-819173

Yes, I did that, and now I’m waiting for the crash. Previously, I had done the same, and, unbelievably, I detected nothing. I hope you can help me soon when the new logs arrive.

Here are the syslog server logs for your review. I hope you can help me, as I haven’t been able to spot any anomalies.

syslog-192.168.50.7.log

I'm afraid there's nothing relevant logged. Was the server crashed when you got the syslog?

5 hours ago, JorgeB said:

I'm afraid there's nothing relevant logged. Was the server crashed when you got the syslog?

Good evening, so I’m not going crazy hehe, since I didn’t spot anything in the logs either. I’m afraid the issue might be with the USB flash drive.

Update:

Well, this whole issue started after a power surge. Here’s a quick rundown of what I’ve tried since then:

• Updated the network card driver.

• Swapped the flash drive for a new one and updated my USB key.

• Moved the flash drive to a rear USB port.

• Disabled some fans and swapped the SATA cable order.

Despite all that, the problem persists. I’m nearly out of hope, hehe.

On the hardware side, I’m at a loss—just yesterday I ran a different OS on this machine without a single freeze.

Any ideas?

Make sure this has been taken care of:

https://forums.unraid.net/topic/46802-faq-for-unraid-v6/page/2/#findComment-819173

On 7/15/2025 at 11:21 AM, JorgeB said:

Make sure this has been taken care of:

https://forums.unraid.net/topic/46802-faq-for-unraid-v6/page/2/#findComment-819173

Good afternoon. I don’t have a Threadripper, so I’m not sure whether the advice above applies to my setup—sorry if my English is off. I isolated the RAM and tested each module individually; the system still froze even with a single stick. Since the issue persisted, I swapped in a low‑power test GPU I have—same crash. I’m starting to worry the CPU might be the culprit, but I’m not certain. Would it be worth installing Windows on the machine and letting it run to see if it still locks up?

UPDATE:

Hi all, I disabled the CPU C‑States in the BIOS. I’ve now got about 2 hours of uptime with no freezes, so maybe that’s the fix. Odd, though—I’ve never had to do this before and suddenly I do. Not 100% sure yet; still testing.

9 hours ago, runawaydevil said:

I don’t have a Threadripper

It also applies to Ryzen CPUs.

Good afternoon, everyone.

Thank you all for your help. It looks like the issue was resolved after I disabled C‑STATE in the BIOS. Although it’s strange—I’ve never needed to do that before—as long as it’s working perfectly now, that’s what matters, right?

Thanks again! I hope anyone else experiencing the same problem can fix it the same way.