I found how to do it (I have other errors now but at least it looks like
I can export).
I am with archlinux and I launch libivirtd with systemctl so the
explanations are for this way to launch libvirtd
There is two options to uncomment in the file /etc/libvirt/qemu.conf
uncomment the following lines and be sure to put them equal to 1:*
*
*vnc_allow_host_audio = 1 *
and further down *
*
*nographics_allow_host_audio = 1*
This options will stop libvirt to set up QEMU_AUDIO_DRV=none but to
export the environment variable you need to change another file
edit the file: */usr/lib/systemd/system/libvirtd.service*
and under the [Service] section add the linde
* Environment=export QEMU_AUDIO_DRV=alsa
*If you check your log in /var/log/libvirt/qemu/yourdomain.log you
should see that the environment variable is activate.
However, as said, I face others issues now:
Home directory not accessible: Permission denied
ALSA lib confmisc.c:768:(parse_card) cannot find card '0'
ALSA lib conf.c:4292:(_snd_config_evaluate) function
snd_func_card_driver returned error: No such file or directory
ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings
ALSA lib conf.c:4292:(_snd_config_evaluate) function snd_func_concat
returned error: No such file or directory
ALSA lib confmisc.c:1251:(snd_func_refer) error evaluating name
ALSA lib conf.c:4292:(_snd_config_evaluate) function snd_func_refer
returned error: No such file or directory
ALSA lib conf.c:4771:(snd_config_expand) Evaluate error: No such
file or directory
ALSA lib pcm.c:2266:(snd_pcm_open_noupdate) Unknown PCM sysdefault
alsa: Could not initialize ADC
alsa: Failed to open `default':
alsa: Reason: No such file or directory
audio: Failed to create voice `ac97.pi'
So I don't know if it is linked to the way I export the variable or not.
I haven't check that but I thought you may want to know how to do it.
Regards.
Feadurn
On 08/12/15 05:18, Okky Hendriansyah wrote:
On December 8, 2015 at 06:24:29, Feadurn ([email protected]
<mailto:[email protected]>) wrote:
I am still a little bit lost on the way to activate the "export
QEMU_AUDIO_DRV=alsa" when using libvirtd. There is an option in
libvirt/qemu.conf : nographics_allow_host_audio=1. Do I just need to
uncomment that line?
Thank you very much
Hi Feadurn,
That was one of my reasons I haven’t migrate all my QEMU script to
libvirt. I had issues enabling the host audio like I use in my plain
QEMU script. If you’re using Alex’ wrapper script way [1], probably
you can regex replace it with ALSA. I never tried myself though.
Reading the description,
# By default, if no graphical front end is configured, libvirt will
disable
# QEMU audio output since directly talking to alsa/pulseaudio may not work
# with various security settings. If you know what you're doing, enable
# the setting below and libvirt will passthrough the QEMU_AUDIO_DRV
# environment variable when using nographics.
I think that option is worth to try. Thanks for pointing this.
[1] http://vfio.blogspot.com/2015/05/vfio-gpu-how-to-series-part-5-vga-mode.html
--
*Okky Hendriansyah*
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