Comment 13 for bug 996906

Revision history for this message
Raymond (superquad-vortex2) wrote :

>Regarding "latency", when default-fragment-size-msec was 10000, I noticed a line saying

>( 124.922| 0.000) D: [alsa-sink] sink.c: latency = 1339

the buffer size of hda in ubuntu 12.04 seem reduced from 4mb back to 64kb

 configured latency: 20.00 ms; range is 1.00 .. 371.52 ms
 card: 0 <alsa_card.pci-0000_00_14.2>
 module: 4
 properties:
  alsa.resolution_bits = "16"
  device.api = "alsa"
  device.class = "sound"
  alsa.class = "generic"
  alsa.subclass = "generic-mix"
  alsa.name = "ALC889 Analog"
  alsa.id = "ALC889 Analog"
  alsa.subdevice = "0"
  alsa.subdevice_name = "subdevice #0"
  alsa.device = "0"
  alsa.card = "0"
  alsa.card_name = "HDA ATI SB"
  alsa.long_card_name = "HDA ATI SB at 0xfe024000 irq 16"
  alsa.driver_name = "snd_hda_intel"
  device.bus_path = "pci-0000:00:14.2"
  sysfs.path = "/devices/pci0000:00/0000:00:14.2/sound/card0"
  device.bus = "pci"
  device.vendor.id = "1002"
  device.vendor.name = "Advanced Micro Devices [AMD] nee ATI"
  device.product.name = "SBx00 Azalia (Intel HDA)"
  device.form_factor = "internal"
  device.string = "front:0"
  device.buffering.buffer_size = "65536"
  device.buffering.fragment_size = "32768"

does it mean that pulseaudio server it own buffer 1000ms when the driver only has 371.52 ms ?