我的主板是主板是映泰HIFIB150S  1D4 没声音，集成ALC887 ，feicuigu@feicuigu-PC:~$ 终端执行pacmd list-sinks，屏显：
eicuigu@feicuigu-PC:~$ pacmd list-sinks
1 sink(s) available.
  * index: 6
        name:
        driver:
        flags: HARDWARE DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
        state: RUNNING
        suspend cause:
        priority: 9950
        volume: front-left: 55191 /  84% / -4.48 dB,   front-right: 55191 /  84% / -4.48 dB,   rear-left: 55191 /  84% / -4.48 dB,   rear-right: 55191 /  84% / -4.48 dB,   front-center: 55191 /  84% / -4.48 dB,   lfe: 55191 /  84% / -4.48 dB,   side-left: 55191 /  84% / -4.48 dB,   side-right: 55191 /  84% / -4.48 dB
                balance 0.00
        base volume: 65536 / 100% / 0.00 dB
        volume steps: 65537
        muted: no
        current latency: 20.53 ms
        max request: 16 KiB
        max rewind: 64 KiB
        monitor source: 7
        sample spec: s16le 8ch 44100Hz
        channel map: front-left,front-right,rear-left,rear-right,front-center,lfe,side-left,side-right
                     环绕 7.1
        used by: 1
        linked by: 1
        configured latency: 23.22 ms; range is 0.50 .. 92.88 ms
        card: 0
        module: 6
        properties:
                alsa.resolution_bits = "16"
                device.api = "alsa"
                device.class = "sound"
                alsa.class = "generic"
                alsa.subclass = "generic-mix"
                alsa.name = "HDMI 4"
                alsa.id = "HDMI 4"
                alsa.subdevice = "0"
                alsa.subdevice_name = "subdevice #0"
                alsa.device = "10"
                alsa.card = "0"
                alsa.card_name = "HDA Intel PCH"
                alsa.long_card_name = "HDA Intel PCH at 0xdf120000 irq 129"
                alsa.driver_name = "snd_hda_intel"
                device.bus_path = "pci-0000:00:1f.3"
                sysfs.path = "/devices/pci0000:00/0000:00:1f.3/sound/card0"
                device.bus = "pci"
                device.vendor.id = "8086"
                device.vendor.name = "Intel Corporation"
                device.product.id = "a170"
                device.product.name = "Sunrise Point-H HD Audio"
                device.form_factor = "internal"
                device.string = "hdmi:0,4"
                device.buffering.buffer_size = "65536"
                device.buffering.fragment_size = "32768"
                device.access_mode = "mmap+timer"
                device.profile.name = "hdmi-surround71-extra4"
                device.profile.description = "Digital Surround 7.1 (HDMI 5)"
                device.description = "内置音频 Digital Surround 7.1 (HDMI 5)"
                alsa.mixer_name = "Realtek ALC891"
                alsa.components = "HDA:10ec0867,1565824d,00100002 HDA:80862809,80860101,00100000"
                module-udev-detect.discovered = "1"
                device.icon_name = "audio-card-pci"
        ports:
                hdmi-output-4: HDMI / DisplayPort 5 (priority 5500, latency offset 0 usec, available: no)
                        properties:
                                device.icon_name = "video-display"
        active port:
feicuigu@feicuigu-PC:~$