我在 Intel NUC 上安装了 ubuntu server 16.04。我手动安装了 pulseaudio。遗憾的是，音频输出仅适用于模拟输出，不适用于 HDMI：
$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC283 Analog [ALC283 Analog]
Subdevicealex@gigabyte:~$s: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
但 pacmd 仅列出一个接收器。
$ pacmd list-sinks
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 DYNAMIC_LATENCY
state: SUSPENDED
suspend cause: IDLE
priority: 9959
volume: front-left: 30129 / 46% / -20.25 dB, front-right: 30129 / 46% / -20.25 dB
balance 0.00
base volume: 65536 / 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: 6
properties:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALC283 Analog"
alsa.id = "ALC283 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 0xd0810000 irq 92"
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 = "0f04"
device.product.name = "Atom Processor Z36xxx/Z37xxx Series High Definition Audio Controller"
device.form_factor = "internal"
device.string = "front:0"
device.buffering.buffer_size = "65536"
device.buffering.fragment_size = "32768"
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 = "Realtek ALC283"
alsa.components = "HDA:10ec0283,1458fa53,00100003 HDA:80862882,80860101,00100000"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
ports:
analog-output-headphones: Headphones (priority 9000, latency offset 0 user, : yes)
properties:
device.icon_name = "audio-headphones"
active port: <analog-output-headphones>
手动播放声音
aplay -D hw:0,3 /usr/share/sounds/alsa/Front_Center.wav
或
speaker-test -c 2 -r 48000 -D hw:0,3
无法通过 HDMI 传输任何声音。
知道如何才能使 HDMI 声音正常工作吗？