Hello,

I am hoping someone can help because i've been struggling with this issue for the last 3 years. Without any warning and completely at random Unraid will completely hang, no display output, no keyboard input, nothing. Even holding the power button does not turn the machine off. The only solution is to literally turn off power at the socket. This happens at complete random. It may happen twice in one month or once in 8 months.

I have been unable to track down any root cause. syslog is useless as nothing is written to the log at the time of the crash (even when sent to an external syslog server). I have replaced CPU, RAM, GPU, NVME drive, multiple HDDs as well as trying various config changes and BIOS updates - all to no avail. Because this happens so randomly, it is hard to reproduce or test potential fixes as i do not know when this might happen next.

When checking syslog-previous, the last few lines are always related to "spinning down":

Apr 23 11:40:14 Unraid emhttpd: spinning down /dev/sdf
Apr 23 11:40:20 Unraid emhttpd: spinning down /dev/sdi
Apr 23 11:40:46 Unraid emhttpd: spinning down /dev/sdh
Apr 23 11:40:48 Unraid emhttpd: spinning down /dev/sdg
Apr 23 11:48:41 Unraid emhttpd: spinning down /dev/sdk
Apr 23 12:02:55 Unraid emhttpd: read SMART /dev/sdk
Apr 23 12:47:56 Unraid emhttpd: spinning down /dev/sdk
Apr 23 13:15:56 Unraid emhttpd: spinning down /dev/sdj

Specs:

• ASUSTeK COMPUTER INC. TUF B450M-PLUS GAMING

• AMD Ryzen 5 5600X 6-Core @ 3700 MHz

• 64 GiB DDR4

• LSI 6Gbps SAS HBA LSI 9200-8i

Really hoping someone can help me get to the bottom of this because its driving me insane. I run some game servers on my unraid box and having random outages is really problematic.

Thanks in advance!

unraid-diagnostics-20260423-1535.zip

Edited April 23Apr 23 by RedSpider

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

9 hours ago, JorgeB said:

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

Thank you. I have altered the c-states bios option and will see how this runs! 🙏

If it keeps crashing, enable the syslog server and post that after the next crash.

13 hours ago, JorgeB said:

If it keeps crashing, enable the syslog server and post that after the next crash.

i already have that enabled but it never seems to capture anything. Logs attached in first post

35 minutes ago, RedSpider said:

i already have that enabled but it never seems to capture anything. Logs attached in first post

If it is not capturing anything you may have syslog configured incorrectly. I suggest you post a screenshot of the settings you have for it.

On 4/24/2026 at 7:51 AM, JorgeB said:

If it keeps crashing, enable the syslog server and post that after the next crash.

Got home today and NAS was hung again despite the C-states change. syslog was mirrored to usb drive. Logs attached

syslog-previous.txt

Unfortunately, there's nothing relevant logged, this can also be a hardware issue, one thing you can try is to boot the server in safe mode with all docker containers/VMs disabled, let it run as a basic NAS for a few days, if it still crashes it's likely a hardware problem, if it doesn't start turning on the other services one by one, including the individual docker containers.

On 4/23/2026 at 10:50 AM, RedSpider said:

I have replaced CPU, RAM, GPU, NVME drive, multiple HDDs as well as trying various config changes and BIOS updates - all to no avail.

Have you tried a different power supply? I had an issue like this (although in my case the system freeze was every few days IIRC). Same as you capturing the syslog didn't help because the server would just silently freeze. I don't recall if I had the same symptom where holding down the power button didn't work.