扬声器不工作 - Sunrise Point-LP 高清音频

Question

我看过很多类似的问题，但不幸的是这些解决方案对我不起作用。我最近安装了 Ubuntu 18.04，但我的扬声器无法工作，也无法在设置中检测到它们，但在运行 pacmd 命令后它们实际上被列为不可用。它们在 Windows 上运行良好，因此问题一定与 ubuntu 中的驱动程序的兼容性有关，但我想必须有一些设置来修复它。这是我从接收器列表中得到的内容：

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: 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: 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 = "ALC255 Analog"
        alsa.id = "ALC255 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 0xb4520000 irq 134"
        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 ALC255"
        alsa.components = "HDA:10ec0255,10251094,00100002 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>

在我看来，耳机和扬声器位于同一个水槽中，尽管您可以看到它使扬声器不可用。有人知道如何处理吗？我自己尝试过，但我开始放弃......以下是有关我的声卡的详细信息

 $ lspci -v | grep -A7 -i "audio"
00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21)
    Subsystem: Acer Incorporated [ALI] Sunrise Point-LP HD Audio
    Flags: bus master, fast devsel, latency 32, IRQ 132
    Memory at b4520000 (64-bit, non-prefetchable) [size=16K]
    Memory at b4510000 (64-bit, non-prefetchable) [size=64K]
    Capabilities: <access denied>
    Kernel driver in use: snd_hda_intel
    Kernel modules: snd_hda_intel, snd_soc_skl

Answer 1

对于那些遇到此问题的人，如果其他类似问题中的解决方案不起作用，例如使用 pavucontrol 等，也许您需要像我的情况一样，查看 alsamixer 是否通过在alsamixer 播放单元，因为如果启用它，则不足以提高 alsamixer 扬声器的音量来解决问题。因此，第一步请确保播放装置的音量未静音。

第二步确保自动静音已禁用。