Several times over the last few weeks I've been dealing with my Unraid server randomly losing network connectivity making it impossible to troubleshoot over the web UI. However, when I go to connect my server directly to my monitor so I can reboot the server that way and restart the web UI, neither my GPU or onboard video provide video. My only other option to reboot cleanly is to disconnect the power to my UPS and allow the server to safely shutdown that way, however, it does not appear like the functionality with my UPS (using NUT) is not working. I set my shutdown time on power loss to 3 minutes and the most recent time the server showed no signs of shutting down after that time forcing me to have to a dirty reboot and perform a parity check that takes 20+ hours. This is the fourth time in the last few weeks this has happened and not sure what could be causing it. I did just recently update to the latest version of Unraid, but I believe this happened at least once before that so I'm not sure it's related.

Any help would be greatly appreciated!

Enable the syslog server and post that after a crash, together with fresh diagnostics.

On 7/17/2025 at 11:48 PM, JorgeB said:

Enable the syslog server and post that after a crash, together with fresh diagnostics.

Went away for a few days this weekend and when I returned this happened again. Thankfully this time around I did get the syslog and can also include a fresh diagnostics for my server.

k-e-v-i-n-diagnostics-20250729-1802.zip

syslog-072925.log

There are constant issues related to a Realtek NIC, do you have a different one you could try with?

15 hours ago, JorgeB said:

There are constant issues related to a Realtek NIC, do you have a different one you could try with?

What are some alternatives? I use this one because I use a USB ethernet adapter so I can get faster connection through ethernet.

Intel is typically better.

7 hours ago, DanHolo said:

I use a USB ethernet adapter

very bad idea :-(

better get something real. I dont know any "stable" USB adapter (of course, it depends on usage. if you have only unfrequent and small requests, they usually work, but if it comes to large transfers of huge files they often run into buffering problem and cancel the session)

when it comes to networking prefer stability instead of speed.

Edited July 31, 2025Jul 31 by MAM59

14 hours ago, MAM59 said:

very bad idea :-(

better get something real. I dont know any "stable" USB adapter (of course, it depends on usage. if you have only unfrequent and small requests, they usually work, but if it comes to large transfers of huge files they often run into buffering problem and cancel the session)

when it comes to networking prefer stability instead of speed.

Well this is good to know. I’ve been using this particular adapter for a few years now with no issues and only suddenly starting having issues with my server hanging. However, I have been doing a lot of heavy transferring of files and backing up my entire iCloud to the server, so that may explain it. Looks like I’ll have to deal with the slower speeds of my motherboards ethernet port until I can replace it with a new PCI card.

On 7/30/2025 at 12:37 AM, JorgeB said:

There are constant issues related to a Realtek NIC, do you have a different one you could try with?

I'm trying to revert back to my onboard NIC until I can get an Intel PCIe NIC but for some reason my server is not detecting my onboard network card. Any idea how I can fix this?

12 minutes ago, DanHolo said:

Any idea how I can fix this?

Check that it not disabled in the BIOS.

If you post new diagnostics we can see if it even being detected as present at the hardware level.

45 minutes ago, DanHolo said:

my server is not detecting my onboard network card

Either BIOS, or network.rules (eth0 fixed to the USB "card").