qemu vm stopped working after upgrade

[daggs]

Greetings,

yesterday I performed a long overdue upgrade of my server. I've ended up with 
one of my vms not working.
kernel, ucode, qemu and libvirt were upgraded however I've ruled them all out 
as possible suspect after reverted to the previous versions so qemu version is 
not that important.
I'm using version 6.0.0

after investigation, I got to these two scripts, one works, the other doesn't.
this is the working one:
qemu-system-x86_64 \
-machine pc-q35-5.0,accel=kvm,usb=off,smm=on,dump-guest-core=off \
-cpu host,migratable=on \
-m 15360 \
-smp 4,sockets=1,dies=1,cores=2,threads=2 \
-drive file=/home/streamer/streamer.img.qcow2.new,if=virtio,format=qcow2 \
-device 
vfio-pci,host=0000:00:02.0,romfile=/home/streamer/gpu-8086:5912-uefi.rom,multifunction=on
 \
-device vfio-pci,host=0000:00:1f.3,multifunction=on \
-usb \
-device usb-host,vendorid=0x046d,productid=0xc52e \
-device usb-host,vendorid=0x2548,productid=0x1002 \
-display none \
-netdev tap,id=hostnet0,ifname=virtsw-streamer,script=no,downscript=no \
-device e1000e,netdev=hostnet0,id=net0,mac=52:54:00:5a:4c:8c \
-blockdev 
'{"driver":"file","filename":"/usr/share/edk2-ovmf/OVMF_CODE.secboot.fd","node-name":"libvirt-pflash0-storage","auto-read-only":true,"discard":"unmap"}'
 \
-blockdev 
'{"driver":"file","filename":"/var/lib/libvirt/qemu/nvram/streamer-vm-q35_VARS.fd","node-name":"libvirt-pflash1-storage","auto-read-only":true,"discard":"unmap"}'

this doesn't work, it is extrapolation of cmd line that is executed by libvirt.:
LC_ALL=C \
PATH=/bin:/sbin:/bin:/sbin:/usr/bin:/usr/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/opt/bin
 \
HOME=/var/lib/libvirt/qemu/domain-2-streamer-vm-q35 \
USER=root \
XDG_DATA_HOME=/var/lib/libvirt/qemu/domain-2-streamer-vm-q35/.local/share \
XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain-2-streamer-vm-q35/.cache \
XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain-2-streamer-vm-q35/.config \
/usr/bin/qemu-system-x86_64 \
-name guest=streamer-vm-q35,debug-threads=on \
-S \
-machine 
pc-q35-5.0,accel=kvm,usb=off,smm=on,dump-guest-core=off,pflash0=libvirt-pflash0-format,pflash1=libvirt-pflash1-format
 \
-cpu host,migratable=on \
-smp 4,sockets=1,dies=1,cores=2,threads=2 \
-m 15360 \
-blockdev 
'{"driver":"file","filename":"/usr/share/edk2-ovmf/OVMF_CODE.secboot.fd","node-name":"libvirt-pflash0-storage","auto-read-only":true,"discard":"unmap"}'
 \
-blockdev 
'{"node-name":"libvirt-pflash0-format","read-only":true,"driver":"raw","file":"libvirt-pflash0-storage"}'
 \
-blockdev 
'{"driver":"file","filename":"/var/lib/libvirt/qemu/nvram/streamer-vm-q35_VARS.fd","node-name":"libvirt-pflash1-storage","auto-read-only":true,"discard":"unmap"}'
 \
-blockdev 
'{"node-name":"libvirt-pflash1-format","read-only":false,"driver":"raw","file":"libvirt-pflash1-storage"}'
 \
-display none \
-device 
vfio-pci,host=0000:00:02.0,id=hostdev1,romfile=/home/streamer/gpu-8086:5912-uefi.rom,multifunction=on
 \
-blockdev 
'{"driver":"file","filename":"/home/streamer/streamer.img.qcow2","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"}'
 \
-blockdev 
'{"node-name":"libvirt-1-format","read-only":false,"driver":"qcow2","file":"libvirt-1-storage","backing":null}'
 \
-msg timestamp=on

I cannot seem to file why, can anyone assist?

Thanks,

Dagg.