Re: [libvirt] [PATCH v2 1/9] qemu: Set QEMU_AUDIO_DRV=none with -nographic
On Mon, Aug 19, 2013 at 12:24:39PM -0400, Cole Robinson wrote:
On my machine, a guest fails to boot if it has a sound card, but not
graphical device/display is configured, because pulseaudio fails to
initialize since it can't access $HOME.
A workaround is removing the audio device, however on ARM boards there
isn't any option to do that, so -nographic always fails.
Set QEMU_AUDIO_DRV=none if no <graphics> are configured. Unfortunately
this has massive test suite fallout.
@@ -7559,9 +7559,13 @@ qemuBuildCommandLine(virConnectPtr conn,
* if you ask for nographic. So we have to make sure we override
* these defaults ourselves...
*/
- if (!def->graphics)
+ if (!def->graphics) {
virCommandAddArg(cmd, "-nographic");
+ /* trying to talk directly to pulseaudio is generally problematic */
+ virCommandAddEnvString(cmd, "QEMU_AUDIO_DRV=none");
+ }
We do something similar with VNC by default, but we have a global qemu.conf
override for that.
/* Unless user requested it, set the audio backend to none, to
* prevent it opening the host OS audio devices, since that causes
* security issues and might not work when using VNC.
*/
if (cfg->vncAllowHostAudio)
virCommandAddEnvPass(cmd, "QEMU_AUDIO_DRV");
else
virCommandAddEnvString(cmd, "QEMU_AUDIO_DRV=none");
I think we probably want todo the same here, since it is in theory
possible to make pulseaudio work for the QEMU driver.
Daniel
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