Comment 51 for bug 996906

Created attachment 113112
High latency because of underruns

Nah, after all prealloc is just snake oil. I now have latency of 66 ms which is unacceptable.

1 sink(s) available.
  * index: 0
 name: <alsa_output.pci-0000_00_1b.0.analog-stereo>
 driver: <module-alsa-card.c>
 flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY FLAT_VOLUME DYNAMIC_LATENCY
 state: RUNNING
 suspend cause:
 priority: 9959
 volume: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% / 0.00 dB
         balance 0.00
 base volume: 65536 / 100% / 0.00 dB
 volume steps: 65537
 muted: no
 current latency: 65.83 ms
 max request: 11 KiB
 max rewind: 344 KiB
 monitor source: 0
 sample spec: s16le 2ch 44100Hz
 channel map: front-left,front-right
              Stereo
 used by: 3
 linked by: 3
 configured latency: 66.00 ms; range is 66.00 .. 2000.00 ms
 card: 0 <alsa_card.pci-0000_00_1b.0>
 module: 6
 properties:
  alsa.resolution_bits = "16"
  device.api = "alsa"
  device.class = "sound"
  alsa.class = "generic"
  alsa.subclass = "generic-mix"
  alsa.name = "VT1708S Analog"
  alsa.id = "VT1708S Analog"
  alsa.subdevice = "0"
  alsa.subdevice_name = "subdevice #0"
  alsa.device = "0"
  alsa.card = "0"
  alsa.card_name = "HDA Intel PCH"
  alsa.long_card_name = "HDA Intel PCH at 0xfe400000 irq 33"
  alsa.driver_name = "snd_hda_intel"
  device.bus_path = "pci-0000:00:1b.0"
  sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card0"
  device.bus = "pci"
  device.vendor.id = "8086"
  device.vendor.name = "Intel Corporation"
  device.product.id = "1c20"
  device.product.name = "6 Series/C200 Series Chipset Family High Definition Audio Controller"
  device.form_factor = "internal"
  device.string = "front:0"
  device.buffering.buffer_size = "352800"
  device.buffering.fragment_size = "176400"
  device.access_mode = "mmap+timer"
  device.profile.name = "analog-stereo"
  device.profile.description = "Analog Stereo"
  device.description = "Built-in Audio Analog Stereo"
  alsa.mixer_name = "VIA VT1708S"
  alsa.components = "HDA:11060397,10438415,00100000"
  module-udev-detect.discovered = "1"
  device.icon_name = "audio-card-pci"
 ports:
  analog-output: Analog Output (priority 9900, latency offset 0 usec, available: unknown)
   properties:

  analog-output-lineout: Line Out (priority 9900, latency offset 0 usec, available: yes)
   properties:

  analog-output-headphones: Headphones (priority 9000, latency offset 0 usec, available: no)
   properties:
    device.icon_name = "audio-headphones"
 active port: <analog-output>

Any suggestions outside of forcing a fixed latency?