Hi, a better way to fix the playback glitches is to use a bigger playback buffer on pulseaudio server side. I suggest you replace your patch with a patch like this one:
diff --git a/audio/paaudio.c b/audio/paaudio.c index fea6071..8bd5b91 100644 --- a/audio/paaudio.c +++ b/audio/paaudio.c @@ -554,7 +554,7 @@ static int qpa_init_out(HWVoiceOut *hw, struct audsettings *as, * qemu audio tick runs at 100 Hz (by default), so processing * data chunks worth 10 ms of sound should be a good fit. */ - ba.tlength = pa_usec_to_bytes (10 * 1000, &ss); + ba.tlength = pa_usec_to_bytes (50 * 1000, &ss); ba.minreq = pa_usec_to_bytes (5 * 1000, &ss); ba.maxlength = -1; ba.prebuf = -1; I tested your patch and while it really improves audio playback, I still notice audio drop-outs. With my suggestion I experience no playback glitches. Regards, Volker