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Ubuntu 18.04：扬声器没有声音

tag-icon • tag-icon 18.04 sound pulseaudio alsa
Ubuntu 18.04：扬声器没有声音

我正在使用 Dell Latitude 5490，从 16.04 升级到 18.04 后，扬声器无法正常工作。我尝试按照提到的一些步骤操作 这里和这里但似乎都不起作用。

以下是命令的输出

pacmd list-sinks

1 sink(s) available.
  * index: 0
    name: <alsa_output.pci-0000_00_1f.3.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: 9039
    volume: front-left: 53577 /  82% / -5.25 dB,   front-right: 53577 /  82% / -5.25 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_1f.3>
    module: 7
    properties:
        alsa.resolution_bits = "16"
        device.api = "alsa"
        device.class = "sound"
        alsa.class = "generic"
        alsa.subclass = "generic-mix"
        alsa.name = "Generic Analog"
        alsa.id = "Generic 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 0xef348000 irq 140"
        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 = "9d71"
        device.product.name = "Sunrise Point-LP HD Audio"
        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 Generic"
        alsa.components = "HDA:10ec0256,10280816,00100002 HDA:8086280b,80860101,00100000"
        module-udev-detect.discovered = "1"
        device.icon_name = "audio-card-pci"
    ports:
        analog-output-speaker: Speakers (priority 10000, latency offset 0 usec, available: no)
            properties:
                device.icon_name = "audio-speakers"
        analog-output-headphones: Headphones (priority 9000, latency offset 0 usec, available: yes)
            properties:
                device.icon_name = "audio-headphones"
    active port: <analog-output-headphones>

以下是 alsamixer 输出的屏幕截图在此处输入图片描述

答案1

因此发现问题不在于 ubuntu，而在于扬声器，我应该先运行系统诊断程序，然后尝试查看问题是否出在软件上，

对于其他可能遇到声音问题的人，

  1. 请先运行系统诊断程序（F12启动时按下）并查看是否能听到扬声器的声音，
  2. 如果这不起作用，请尝试运行Ubuntu/任何其他发行版（无需安装）并进行声音测试。

如果两个都不起作用，问题可能出在硬件上。如果其中一个不起作用，请尝试查看是否是 的问题pulse audio，或者您的系统音频是否设置为 0 到alsamixer。

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