Hi Raymond,
1 sink(s) available.
* index: 0
name: <alsa_output.pci-0000_00_1b.0.iec958-stereo>
driver: <module-alsa-card.c>
flags: HARDWARE HW_MUTE_CTRL DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
state: SUSPENDED
suspend cause: IDLE
priority: 9958
volume: 0: 100% 1: 100%
0: 0.00 dB 1: 0.00 dB
balance 0.00
base volume: 100%
0.00 dB
volume steps: 65537
muted: no
current latency: 0.00 ms
max request: 0 KiB
max rewind: 0 KiB
monitor source: 0
sample spec: s16le 2ch 44100Hz
channel map: front-left,front-right
Stereo
used by: 0
linked by: 0
configured latency: 0.00 ms; range is 0.50 .. 371.52 ms
card: 0 <alsa_card.pci-0000_00_1b.0>
module: 5
properties:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "STAC9271D Digital"
alsa.id = "STAC9271D Digital"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "1"
alsa.card = "0"
alsa.card_name = "HDA Intel"
alsa.long_card_name = "HDA Intel at 0xe3220000 irq 32"
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 = "293e"
device.product.name = "82801I (ICH9 Family) HD Audio Controller"
device.form_factor = "internal"
device.string = "iec958:0"
device.buffering.buffer_size = "65536"
device.buffering.fragment_size = "32768"
device.access_mode = "mmap+timer"
device.profile.name = "iec958-stereo"
device.profile.description = "Digital Stereo (IEC958)"
device.description = "Built-in Audio Digital Stereo (IEC958)"
alsa.mixer_name = "SigmaTel STAC9271D"
alsa.components = "HDA:83847627,80863001,00100201"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
ports:
iec958-stereo-output: Digital Output (S/PDIF) (priority 0,
latency offset 0 usec, available: unknown)
properties:
active port: <iec958-stereo-output>
I can see
ports iec958-stereo-output: Digital Output (S/PDIF) (priority 0, latency offset
0 usec, available: unknown)
properties:
is this means Alsa is redirecting sound to S/PDIF?
how can I fix this
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https://bugs.launchpad.net/bugs/1540372
Title:
[Intel DP35DP, SigmaTel STAC9271D, Green Speaker, Rear] Underruns,
dropouts or crackling sound
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1540372/+subscriptions
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