Hello!
After some more digging, I've tracked the problem to the audio input /
capture-side of the code. If I leave out the QEMU_ALSA_ADC_DEV="null"
environment variable, the freeze does not happen, but Qemu spews
hundreds of errors, following lines repeat many times:
--
alsa: Could not initialize ADC
alsa: Failed to open `default':
alsa: Reason: No such file or directory
alsa: Could not initialize ADC
alsa: Failed to open `default':
alsa: Reason: No such file or directory
audio: Failed to create voice `adc'
--
I also tried disabling the capture in the code, with this patch against
v4.2.0 git. (You also have to pass --disable-werror to configure.)
diff --git a/audio/audio.c b/audio/audio.c
index 56fae55047..82476a41de 100644
--- a/audio/audio.c
+++ b/audio/audio.c
@@ -1352,8 +1352,10 @@ static void audio_run_capture (AudioState *s)
void audio_run(AudioState *s, const char *msg)
{
audio_run_out(s);
+#if 0
audio_run_in(s);
audio_run_capture(s);
+#endif
#ifdef DEBUG_POLL
{
.. and with the patch it worked perfectly. No hangs/freeze. But obviously
it is not a solution for other people as it disables audio capture/recording.
Personally I don't need it, of course, which is why I have that
QEMU_ALSA_ADC_DEV="null" set.
Hope this helps.
--
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