Comment 0 for bug 320875

Binary package hint: pulseaudio

pulseaudio 0.9.14-0ubuntu1 produces these log messages:

alsa-util.c: Cannot find fallback mixer control "PCM" or mixer control is no combination of switch/volume.
alsa-util.c: snd_pcm_avail_update() returned a value that is exceptionally large: 412788 bytes (780 ms) Most likely this is an ALSA driver bug. Please report this issue to the PulseAudio developers.

and thousands of this:

module-alsa-sink.c: ALSA woke us up to write new data to the device, but there was actually nothing to write! Most likely this is an ALSA driver bug. Please report this issue to the PulseAudio developers.

With pulseaudio 0.9.14-0ubuntu1 I have only these log messages, but no sound glitches any more.

$ cat /proc/asound/cards
 0 [Audigy2 ]: Audigy2 - Audigy 4 [SB0610]
                      Audigy 4 [SB0610] (rev.0, serial:0x10211102) at 0x1000, irq 21