I've had this problem since I updated to 6.8.0 and now with 6.8.1.  My server runs about a week before the gui freezes up and becomes unresponsive.  I ran versions before 6.8 for about a year and never had this problem.  I've attached a diagnostics file.  You can ignore the UPS errors, I unplugged it to plug in a keyboard for troubleshooting.

 

 

Version 6.8.1

Hardware

 - GIGABYTE - GA-7PESH2

 - Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz x 2

 - Samsung Memory M393B2G70QH0-YK0 16GB DDR3 1600 ECC Registered 1.35V x 8

 - LSI2008 8x SAS/SATA

 - Silicon Power 1TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5" 7mm (0.28") Internal Solid State Drive (SP001TBSS3A55S25) - Cache Drive

 - Western Digital 10TB HD  - 1 Parity, 3 Data

 

Plugins

 - Community Applications

 - Unassigned Devices

 - CA Auto Update Applications

 - CA Backup / Resore Appdata

 - Disk Location

 - Dynamix ssd trim

 - Dynamix System Information

 - Dynamix System Temperature

 - Dynamix wireguard

 - Fix common problems

 - Nerd Tools

 - Preclear disks

 - Statistics

 - User Scripts

 

 

Docker

 - Binhex krusader (not running)

 - binhex minecraftbedrockserver

 - bitwarden

 - duckdns

 - emby

 - firefox

 - handbrake

 - JDownloader2

 - letsencrypt

 - mariadb

 - MKVToolNix (not running)

 - Netdata

 - nextcloud

 - openvpn-as

 - pihole

 - plex

 - QDirStat (not running)

 - tautulli

 - unms (not running)

 

 

VM

 - Linux (not running)

 - Windows 10 (running)

 

diag.zip

Start with uninstalling Nerd Tools, to exclude any package incompatibility issue with Unraid 6.8 (may need to reboot afterwards)

 

Btw it is recommended to upgrade to Unraid 6.8.2.

I noticed that 6.8.2 was available after I was fixing my server last night.  After pulling the diagnostic and restarting I upgraded.  I just removed Nerd Tools as well so I'll see if the problem repeats itself.