issues with vm after upgrade

[daggs]

Greetings,

a few weeks ago I've upgraded my system, this resulted with qemu and libvirt being upgraded to 6.0.0 and ~7.5.0 respectfully.
I have two vms running on my system, router and streamer.
the router vm works great, the streamer vm doesn't.
after the streamer vm start, the monitor screen gets black and thats it. no relevant error are found in the log, see: http://dpaste.com/ERWDEJQPC
the xml ca be found at https://dpaste.com/FQDN6NTN2
in contrast the following oneliner works: 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"}'

another issue encountered caused by this param: "-audiodev id=audio1,driver=none" which is auto added to the qemu line.
if I add the line to the above oneliner, the guest doesn't detects the pt sound card. without it it does and it works.

help on solving both issues will be appreciated.

Thanks,

Dagg