SimonF

likely to be because you have these in the XML
 
<memoryBacking> <nosharepages/> <source type='memfd'/> <access mode='shared'/> </memoryBacking> remove the memfd and shared lines. You may have tested virtiofs which requires these but does not remove when you dont use that option anymore.

The vnc is part of qemu/libvirt stack. You can use external clients I use virt viewer but should work with other vnc clients.
 

On flash drive on another machine change autostart to no in this file
 
root@GUITest:~# cat /boot/config/disk.cfg
# Generated settings:
startArray="no"
 
Rename /boot/config/vfio-pci.cfg to .old
 
put flash back in server boot.
 
log in
 
open terminal or use console.
mv /usr/local/sbin/qemu /usr/local/sbin/qemu.old
 
start array vm's should not autostart.
 
update VM. 
mv /usr/local/sbin/qemu.old /usr/local/sbin/qemu
 
Dont forget to set autostart in disk settings.
 

goto device manager and load the qxl driver from the libvirt cd

Yes that would fix the issue also. 

Have you tried advanced view on docker page, It will show orphan images and you can delete from there.
 

https://www.amazon.com/FebSmart-Self-Powered-Technology-No-Additional-FS-U4-Pro/dp/B072LS4JH7/ref=sr_1_2_sspa?crid=1G0S54HDT3TLT&keywords=usb%2Bpci%2Blinux&qid=1694979890&sprefix=usb%2Bpci%2Blinux%2Caps%2C313&sr=8-2-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&th=1 looks like linux supported.

<memoryBacking> <nosharepages/> <source type='memfd'/> <access mode='shared'/> </memoryBacking>  
Remove these two lines
<source type='memfd'/> <access mode='shared'/> 
 
 
If you had tried virtiofs it would have added them in but does not remove if you remove the mappings in the gui. You will need to do via the XML editor.

https://github.com/ich777/intel-gpu-top/blob/master/intel-gpu-top.plg

Should be fairly quick have you got 1Gb memory allocated try increasing.

Stop vm,
Edit xml and change to XML view via the slider top right 

 
Make a copy of the XML before changing. Creating diagnostics will have a copy of the xml in it also.
 
You will now see the XML view scroll to be bottom. Be careful not to remove sections.
 
 

 
So would look like this. But you may not have the usb part as that is a passed through USB device
 

Maybe change to SATA for the bus type on CD. It may be you just missed the press any key when at this screen type reset + enter and hopefully you will see press any key to boot from CD?

Not found any way to enable logging. The following will show connections when active.
 
root@computenode:/mnt/user/appdata/NUT-unRAID/plugin# virsh qemu-monitor-command Slackware3 --pretty  query-vnc
{
  "return": {
    "enabled": true,
    "auth": "vnc",
    "family": "ipv4",
    "clients": [
      {
        "family": "ipv4",
        "service": "23698",
        "host": "192.168.1.41",
        "websocket": false
      },
      {
        "family": "ipv4",
        "service": "49494",
        "host": "127.0.0.1",
        "websocket": true
      }
    ],
    "service": "5901",
    "host": "0.0.0.0"
  },
  "id": "libvirt-459"
}
root@computenode:/mnt/user/appdata/NUT-unRAID/plugin# 
 
I have requested a feature request to QEMU team for a security log.

You need to edit this file. currently it has blacklist i915. I dont know what the value would be for your CPU. But it should be in the system log when the driver loads currently it is set not to load.
 
root@computenode:~# cat /boot/config/modprobe.d/i915.conf 
options i915 force_probe=56a0
root@computenode:~# 

do ls /dev/disk/by-id/
 
and use the one that matches you device here 
 

I have copied your XML into my system and it allows me to update with no issues.

go runs at end of rc.local. at this port emhttp(GUI) has not started until end of go. Therefore docker is not running as it is started by the gui.

You need to unlock via padlock near top right

Try installing this one.
 

Reason for autostart not working is 74:00.0 is not valid either delete that section from the config file on the boot/config/vfio-pci.cfg or make some changes from sysdevices to update the file. Also you dont have the audio part bound for 02:00.1 on the graphics card.  Also does not look like you have it passed thru to VM hence the possible issue with drivers.
 
BIND=0000:00:1f.3|8086:a348 0000:02:00.0|10de:1c03 0000:03:00.0|144d:a808 0000:74:00.0|144d:a809

Manual copy of bz* files for download zip to usb.

I cannot see the ups in the lsusb so maybe check cabling.

Just change one of the tick boxes then press bind button and then revert that change and press bind again and it will fix the file.

Have a look at this 
 

can you provide a bit more info on how they used, i.e. do you pass into a VM/Docker.
 
can you not use by-id as the path?
 
root@computenode:/dev/serial/by-id# ls
usb-0658_0200-if00@  usb-dresden_elektronik_ingenieurtechnik_GmbH_ConBee_II_