Yes, I agree, the patch itself is a quick fix, indeed, if I look to the graphs in QJackCtl, I would expect to see new bubbles from qemu connected to the system ports, as it happens when I connect Firefox or Falkon through alsa -> jack plugin, as per the output you can see it's using some sort of null sink already populated.
About the patch, yes no problem I'll modify it and submit. Thanks! Jose. -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1908832 Title: jack audio dev produces no sound Status in QEMU: New Bug description: Hi, I'm testing the new jack audiodev backend in my laptop. The host system is gentoo, using the ebuild for qemu 5.1.0-r2, and I'm using jack use flag globally in the system so any ebuild that have support for jack should be build with it. The jack setup reportedly works as I use it with firefox, and mumble with no trouble. When I launch the following script, I see the vm connects to jack: /usr/bin/qemu-system-x86_64 -enable-kvm -M q35 -vga virtio -display gtk,gl=on \ -cpu host -smp 2,cores=2,threads=1 \ -m 4G -L /usr/share/qemu \ -global ICH9-LPC.disable_s3=1 -global ICH9-LPC.disable_s4=1 \ -drive file=/usr/share/edk2-ovmf/OVMF_CODE.fd,if=pflash,format=raw,unit=0,readonly=on \ -drive file=debian_VARS.fd,if=pflash,format=raw,unit=1 \ -audiodev id=jack,driver=jack -device ich9-intel-hda -device hda-duplex,audiodev=jack \ -device virtio-serial-pci \ -device virtserialport,chardev=spicechannel0,name=com.redhat.spice.0 \ -chardev spicevmc,id=spicechannel0,name=vdagent \ -device nec-usb-xhci,id=usb \ -device usb-host,vendorid=0x04ca,productid=0x708e \ -device usb-host,vendorid=0x1050,productid=0x0407 \ -chardev spicevmc,name=usbredir,id=usbredirchardev1 \ -device usb-redir,chardev=usbredirchardev1,id=usbredirdev1 \ -chardev spicevmc,name=usbredir,id=usbredirchardev2 \ -device usb-redir,chardev=usbredirchardev2,id=usbredirdev2 \ -chardev spicevmc,name=usbredir,id=usbredirchardev3 \ -device usb-redir,chardev=usbredirchardev3,id=usbredirdev3 \ -netdev user,id=user.0 -device virtio-net-pci,netdev=user.0 \ -drive file=debian.qcow2,cache=none,aio=io_uring,if=virtio Output of vm initialization: jack: JACK output configured for 48000Hz (1024 samples) jack: JACK input configured for 48000Hz (1024 samples) gl_version 46 - core profile enabled GLSL feature level 430 Though executing any application that uses sound, for instance, any youtube video through browser, I listen nothing. By executing pkill jackd, and launching the same script replacing the audiodev line for the following: -audiodev id=alsa,driver=alsa -device ich9-intel-hda -device hda-duplex,audiodev=alsa \ The audio works, and I can listen to music, or any other kind of application, though I cannot listen anything else in the host. The guest is a simple debian testing(bullseye) system with plasma desktop, using pulseaudio, nothing fancy. Thanks! José To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1908832/+subscriptions
