Re: issues with vm after upgrade

Sent: Monday, August 02, 2021 at 12:17 PM From: "Martin Kletzander" <mkletzan(a)redhat.com&gt; To: "daggs" <daggs(a)gmx.com&gt; Cc: libvirt-users(a)redhat.com Subject: Re: issues with vm after upgrade On Sat, Jul 31, 2021 at 12:19:59PM +0200, daggs wrote: >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. > The links have expired, so I cannot look at the XML. However do you have any <audio/> in the XML at all? I believe that without it we are disabling any audio backends since no audio HW was requested.