Re: [ovirt-users] how to debug no audio in guest?

On Thu, Aug 25, 2016 at 5:17 PM, Jakub Niedermertl <jniederm(a)redhat.com&gt; wrote: So, some revamping of information as some time has passed and new guests have been nstalled on the same system: Engine version (self hosted) : oVirt Engine Version: 3.6.6.2-1.el7.centos Host OS : CentOS 7.2 with kernel 3.10.0-327.18.2.el7.x86_64 Host oVirt version is 3.6.6 as in ovirt-release36-3.6.6-1.noarch Host libvirt/vdsmd components: [g.cecchi@ovirt01 ~]$ rpm -qa|grep -E "libvirt|vdsm" libvirt-daemon-driver-network-1.2.17-13.el7_2.4.x86_64 libvirt-python-1.2.17-2.el7.x86_64 vdsm-cli-4.17.28-0.el7.centos.noarch libvirt-lock-sanlock-1.2.17-13.el7_2.4.x86_64 libvirt-daemon-driver-secret-1.2.17-13.el7_2.4.x86_64 libvirt-daemon-config-network-1.2.17-13.el7_2.4.x86_64 vdsm-xmlrpc-4.17.28-0.el7.centos.noarch libvirt-glib-0.1.9-1.el7.x86_64 libvirt-daemon-driver-qemu-1.2.17-13.el7_2.4.x86_64 libvirt-daemon-kvm-1.2.17-13.el7_2.4.x86_64 libvirt-client-1.2.17-13.el7_2.4.x86_64 vdsm-hook-vmfex-dev-4.17.28-0.el7.centos.noarch libvirt-daemon-driver-storage-1.2.17-13.el7_2.4.x86_64 vdsm-infra-4.17.28-0.el7.centos.noarch vdsm-jsonrpc-4.17.28-0.el7.centos.noarch libvirt-daemon-config-nwfilter-1.2.17-13.el7_2.4.x86_64 vdsm-python-4.17.28-0.el7.centos.noarch libvirt-gobject-0.1.9-1.el7.x86_64 libvirt-daemon-driver-interface-1.2.17-13.el7_2.4.x86_64 vdsm-yajsonrpc-4.17.28-0.el7.centos.noarch libvirt-daemon-driver-nodedev-1.2.17-13.el7_2.4.x86_64 libvirt-gconfig-0.1.9-1.el7.x86_64 libvirt-daemon-driver-nwfilter-1.2.17-13.el7_2.4.x86_64 vdsm-4.17.28-0.el7.centos.noarch libvirt-daemon-1.2.17-13.el7_2.4.x86_64 Host hw : intel NUC6i5SYH Client is Fedora 23 with virt-viewer-3.0-1.fc23.x86_64 With a Fedora 24 guest accessed using firefox, user portal and remote-viewer, sounds are ok (test speakers). The Fedora 24 guest is configured as "Optimized for Desktop", in its console options, advanced parameters, I have "soundcard enabled" And in web admin portal I see this line in f24 VM bottom pane, label "Vm devices": https://drive.google.com/file/d/0BwoPbcrMv8mvU0tQZTNBVmZVcTg/view?usp=sha... Also for a CentOS 7.2 guest, with same config, sound is ok (test speakers) Instead for a CentOS 6.8 guest with same config I see the device inside the OS, but no sound: https://drive.google.com/file/d/0BwoPbcrMv8mvbHRLSDBueVZObTA/view?usp=sha... In CentOS 6.8 the audio device is seen as: 00:08.0 Audio device: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) High Definition Audio Controller (rev 01) and it seems the same in CentOS 7.2 guest OS: 00:08.0 Audio device: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) High Definition Audio Controller (rev 01) Under /var/log/libvirt/qemu of host I indeed see C6 c6desktop.log: 2016-08-25 23:00:37.668+0000: starting up libvirt version: 1.2.17, package: 13.el7_2.4 (CentOS Build System <http://bugs.centos.org>;, 2016-03-31-16:56:26, worker1.bsys.centos.org), qemu version: 2.3.0 (qemu-kvm-ev-2.3.0-31.el7_2.10.1) LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin QEMU_AUDIO_DRV=none /usr/libexec/qem u-kvm -name c6desktop ... C7 c7desktop.log : 2016-08-25 22:59:02.531+0000: starting up libvirt version: 1.2.17, package: 13.el7_2.4 (CentOS Build System <http://bugs.centos.org>;, 2016-03-31-16:56:26, worker1.bsys.centos.org), qemu version: 2.3.0 (qemu-kvm-ev-2.3.0-31.el7_2.10.1) LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin QEMU_AUDIO_DRV=spice /usr/libexec/qe mu-kvm -name c7desktop ... Apparently all is the same in qemu-kvm command lines, comparing c6 with c7 one, but I don't understand who drives instead the QEMU_AUDIO_DRV=XXX in log file that is different between the two guests (none vs spice) and btw also in f24 it is spice: 2016-07-31 23:00:44.778+0000: starting up libvirt version: 1.2.17, package: 13.el7_2.4 (CentOS Build System <http://bugs.centos.org>;, 2016-03-31-16:56:26, worker1.bsys.centos.org), qemu version: 2.3.0 (qemu-kvm-ev-2.3.0-31.el7_2.10.1) LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin QEMU_AUDIO_DRV=spice /usr/libexec/qe mu-kvm -name f24 ... Could it be that initially c6 was created as optimized for server and then even if changing it to optimized for desktop, it doesn't get actually some parts of the change? Or something related to ich6 drivers in CentOS 6? In messages of C6 guest I see: Aug 26 01:00:58 localhost kernel: snd_hda_intel 0000:00:08.0: PCI INT A -> Link[LNKD] -> GSI 10 (level, high) -> IRQ 10 Aug 26 01:00:58 localhost kernel: sr 1:0:0:0: Attached scsi generic sg0 type 5 Aug 26 01:00:58 localhost kernel: sound hdaudioC0D0: autoconfig for ID 22: line_outs=1 (0x3/0x0/0x0/0x0/0x0) type:line Aug 26 01:00:58 localhost kernel: sound hdaudioC0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0) Aug 26 01:00:58 localhost kernel: sound hdaudioC0D0: hp_outs=0 (0x0/0x0/0x0/0x0/0x0) Aug 26 01:00:58 localhost kernel: sound hdaudioC0D0: mono: mono_out=0x0 Aug 26 01:00:58 localhost kernel: sound hdaudioC0D0: inputs: Aug 26 01:00:58 localhost kernel: sound hdaudioC0D0: Line=0x5 and related to kernel modules: [g.cecchi@localhost ~]$ sudo lsmod | grep snd snd_hda_codec_generic 64356 1 snd_hda_intel 56602 1 snd_hda_codec 144814 2 snd_hda_codec_generic,snd_hda_intel snd_hwdep 6972 1 snd_hda_codec snd_seq 60769 0 snd_seq_device 7277 1 snd_seq snd_pcm 93697 2 snd_hda_intel,snd_hda_codec snd_timer 22747 2 snd_seq,snd_pcm snd 73783 10 snd_hda_codec_generic,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_seq,snd_seq_device,snd_pcm,snd_timer soundcore 7958 2 snd_hda_codec,snd snd_page_alloc 8856 2 snd_hda_intel,snd_pcm In dmesg for C7 guest (messages is less verbose): [ 3.406940] snd_hda_intel 0000:00:08.0: irq 35 for MSI/MSI-X [ 3.451694] snd_hda_codec_generic hdaudioC0D0: autoconfig for ID 22: line_outs=1 (0x3/0x0/0x0/0x0/0x0) type:line [ 3.451697] snd_hda_codec_generic hdaudioC0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0) [ 3.451699] snd_hda_codec_generic hdaudioC0D0: hp_outs=0 (0x0/0x0/0x0/0x0/0x0) [ 3.451700] snd_hda_codec_generic hdaudioC0D0: mono: mono_out=0x0 [ 3.451701] snd_hda_codec_generic hdaudioC0D0: inputs: [ 3.451703] snd_hda_codec_generic hdaudioC0D0: Line=0x5 and related to kernel modules: [g.cecchi@c7plone ~]$ sudo lsmod|grep snd snd_hda_codec_generic 74126 1 snd_hda_intel 35779 4 snd_hda_codec 137386 2 snd_hda_codec_generic,snd_hda_intel snd_hda_core 57760 3 snd_hda_codec_generic,snd_hda_codec,snd_hda_intel snd_hwdep 13608 1 snd_hda_codec snd_seq 66691 0 snd_seq_device 14356 1 snd_seq snd_pcm 105835 3 snd_hda_codec,snd_hda_intel,snd_hda_core snd_timer 29639 2 snd_pcm,snd_seq snd 83425 16 snd_hwdep,snd_timer,snd_pcm,snd_seq,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel,snd_seq_device soundcore 15047 1 snd Thanks in advance Gianluca