上论坛的人这么少，没人回复。

麻烦你拔掉耳机切换到扬声器后，把 pacmd list-cards 和 pacmd list-sinks 的输出贴一下，谢谢！

不知道你有没有外接 HDMI 接口的显示器。
15.5 Beta 有个 bug 会使声音默认从 HDMI 口输出，我之前就是。把 HDMI 关了就好。
如图（PulseAudio 音量控制）：

插上耳机后，扬声器就不可用了

同样的问题，借宝地问一下，我的是刚更新的15.5最新版，也是耳机有声音，扬声器没有。
这是我的pacmd list-cards
3 card(s) available.
    index: 0
        name:
        driver:
        owner module: 6
        properties:
                alsa.card = "1"
                alsa.card_name = "HDA NVidia"
                alsa.long_card_name = "HDA NVidia at 0xfb080000 irq 17"
                alsa.driver_name = "snd_hda_intel"
                device.bus_path = "pci-0000:01:00.1"
                sysfs.path = "/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1"
                device.bus = "pci"
                device.vendor.id = "10de"
                device.vendor.name = "NVIDIA Corporation"
                device.product.id = "0bea"
                device.product.name = "GF108 High Definition Audio Controller"
                device.string = "1"
                device.description = "GF108 High Definition Audio Controller"
                module-udev-detect.discovered = "1"
                device.icon_name = "audio-card-pci"
        profiles:
                output:hdmi-stereo: Digital Stereo (HDMI) 输出 (priority 5400, available: no)
                output:hdmi-surround: Digital Surround 5.1 (HDMI) 输出 (priority 300, available: no)
                output:hdmi-surround71: Digital Surround 7.1 (HDMI) 输出 (priority 300, available: no)
                output:hdmi-stereo-extra1: Digital Stereo (HDMI 2) 输出 (priority 5200, available: no)
                output:hdmi-surround-extra1: Digital Surround 5.1 (HDMI 2) 输出 (priority 100, available: no)
                output:hdmi-surround71-extra1: Digital Surround 7.1 (HDMI 2) 输出 (priority 100, available: no)
                output:hdmi-stereo-extra2: Digital Stereo (HDMI 3) 输出 (priority 5200, available: no)
                output:hdmi-surround-extra2: Digital Surround 5.1 (HDMI 3) 输出 (priority 100, available: no)
                output:hdmi-surround71-extra2: Digital Surround 7.1 (HDMI 3) 输出 (priority 100, available: no)
                output:hdmi-stereo-extra3: Digital Stereo (HDMI 4) 输出 (priority 5200, available: unknown)
                off: 关 (priority 0, available: unknown)
        active profile:
        sinks:
                alsa_output.pci-0000_01_00.1.hdmi-stereo/#8: GF108 High Definition Audio Controller Digital Stereo (HDMI)
        sources:
                alsa_output.pci-0000_01_00.1.hdmi-stereo.monitor/#10: Monitor of GF108 High Definition Audio Controller Digital Stereo (HDMI)
        ports:
                hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: no)
                        properties:
                                device.icon_name = "video-display"
                hdmi-output-1: HDMI / DisplayPort 2 (priority 5800, latency offset 0 usec, available: no)
                        properties:
                                device.icon_name = "video-display"
                hdmi-output-2: HDMI / DisplayPort 3 (priority 5700, latency offset 0 usec, available: no)
                        properties:
                                device.icon_name = "video-display"
                hdmi-output-3: HDMI / DisplayPort 4 (priority 5600, latency offset 0 usec, available: yes)
                        properties:
                                device.icon_name = "video-display"
                                device.product.name = "Lenovo AIO PC"
    index: 1
        name:
        driver:
        owner module: 7
        properties:
                alsa.card = "0"
                alsa.card_name = "HDA Intel PCH"
                alsa.long_card_name = "HDA Intel PCH at 0xfb320000 irq 31"
                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 = "1c20"
                device.product.name = "6 Series/C200 Series Chipset Family High Definition Audio Controller"
                device.form_factor = "internal"
                device.string = "0"
                device.description = "内置音频"
                module-udev-detect.discovered = "1"
                device.icon_name = "audio-card-pci"
        profiles:
                input:analog-stereo: 模拟立体声 输入 (priority 60, available: unknown)
                output:analog-stereo: 模拟立体声 输出 (priority 6000, available: unknown)
                output:analog-stereo+input:analog-stereo: 模拟立体声双工 (priority 6060, available: unknown)
                output:analog-surround-21: 模拟环绕 2.1 输出 (priority 800, available: unknown)
                output:analog-surround-21+input:analog-stereo: 模拟环绕 2.1 输出 + 模拟立体声 输入 (priority 860, available: unknown)
                output:analog-surround-40: 模拟环绕 4.0 输出 (priority 700, available: unknown)
                output:analog-surround-40+input:analog-stereo: 模拟环绕 4.0 输出 + 模拟立体声 输入 (priority 760, available: unknown)
                output:analog-surround-41: 模拟环绕 4.1 输出 (priority 800, available: unknown)
                output:analog-surround-41+input:analog-stereo: 模拟环绕 4.1 输出 + 模拟立体声 输入 (priority 860, available: unknown)
                output:analog-surround-50: 模拟环绕 5.0 输出 (priority 700, available: unknown)
                output:analog-surround-50+input:analog-stereo: 模拟环绕 5.0 输出 + 模拟立体声 输入 (priority 760, available: unknown)
                output:analog-surround-51: 模拟环绕 5.1 输出 (priority 800, available: unknown)
                output:analog-surround-51+input:analog-stereo: 模拟环绕 5.1 输出 + 模拟立体声 输入 (priority 860, available: unknown)
                off: 关 (priority 0, available: unknown)
        active profile:
        sinks:
                alsa_output.pci-0000_00_1b.0.analog-stereo/#1: 内置音频 模拟立体声
        sources:
                alsa_output.pci-0000_00_1b.0.analog-stereo.monitor/#1: Monitor of 内置音频 模拟立体声
                alsa_input.pci-0000_00_1b.0.analog-stereo/#2: 内置音频 模拟立体声
        ports:
                analog-input-internal-mic: 内部话筒 (priority 8900, latency offset 0 usec, available: unknown)
                        properties:
                                device.icon_name = "audio-input-microphone"
                analog-input-mic: 话筒 (priority 8700, latency offset 0 usec, available: no)
                        properties:
                                device.icon_name = "audio-input-microphone"
                analog-output-speaker: 扬声器 (priority 10000, latency offset 0 usec, available: unknown)
                        properties:
                                device.icon_name = "audio-speakers"
                analog-output-headphones: 模拟耳机 (priority 9000, latency offset 0 usec, available: no)
                        properties:
                                device.icon_name = "audio-headphones"
    index: 2
        name:
        driver:
        owner module: 8
        properties:
                alsa.card = "2"
                alsa.card_name = "Lenovo USB2.0 UVC Camera"
                alsa.long_card_name = "Vimicro Co.,ltd Lenovo USB2.0 UVC Camera at usb-0000:00:1d.0-1.6, high speed"
                alsa.driver_name = "snd_usb_audio"
                device.bus_path = "pci-0000:00:1d.0-usb-0:1.6:1.2"
                sysfs.path = "/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.6/2-1.6:1.2/sound/card2"
                udev.id = "usb-Vimicro_Co._ltd_Lenovo_USB2.0_UVC_Camera-02"
                device.bus = "usb"
                device.vendor.id = "0ac8"
                device.vendor.name = "Z-Star Microelectronics Corp."
                device.product.id = "c412"
                device.product.name = "Lenovo USB2.0 UVC Camera"
                device.serial = "Vimicro_Co._ltd_Lenovo_USB2.0_UVC_Camera"
                device.form_factor = "webcam"
                device.string = "2"
                device.description = "Lenovo USB2.0 UVC Camera"
                module-udev-detect.discovered = "1"
                device.icon_name = "camera-web-usb"
        profiles:
                input:analog-mono: 模拟单声道 输入 (priority 2, available: unknown)
                off: 关 (priority 0, available: unknown)
        active profile:
        sources:
                alsa_input.usb-Vimicro_Co._ltd_Lenovo_USB2.0_UVC_Camera-02.analog-mono/#3: Lenovo USB2.0 UVC Camera 模拟单声道
        ports:
                analog-input-mic: 话筒 (priority 8700, latency offset 0 usec, available: unknown)
                        properties:
                                device.icon_name = "audio-input-microphone"

这是  pacmd list-sinks
2 sink(s) available.
  * index: 1
        name:
        driver:
        flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
        state: RUNNING
        suspend cause:
        priority: 9959
        volume: front-left: 49073 /  75% / -7.54 dB,   front-right: 51118 /  78% / -6.47 dB
                balance 0.04
        base volume: 65536 / 100% / 0.00 dB
        volume steps: 65537
        muted: no
        current latency: 22.19 ms
        max request: 4 KiB
        max rewind: 344 KiB
        monitor source: 1
        sample spec: s16le 2ch 44100Hz
        channel map: front-left,front-right
                     立体声
        used by: 1
        linked by: 1
        configured latency: 23.22 ms; range is 0.50 .. 2000.00 ms
        card: 1
        module: 7
        properties:
                alsa.resolution_bits = "16"
                device.api = "alsa"
                device.class = "sound"
                alsa.class = "generic"
                alsa.subclass = "generic-mix"
                alsa.name = "ALC663 Analog"
                alsa.id = "ALC663 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 0xfb320000 irq 31"
                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 = "1c20"
                device.product.name = "6 Series/C200 Series Chipset Family High Definition Audio Controller"
                device.form_factor = "internal"
                device.string = "front:0"
                device.buffering.buffer_size = "352800"
                device.buffering.fragment_size = "176400"
                device.access_mode = "mmap+timer"
                device.profile.name = "analog-stereo"
                device.profile.description = "模拟立体声"
                device.description = "内置音频 模拟立体声"
                alsa.mixer_name = "Realtek ALC663"
                alsa.components = "HDA:10ec0663,17aa3620,00100001"
                module-udev-detect.discovered = "1"
                device.icon_name = "audio-card-pci"
        ports:
                analog-output-speaker: 扬声器 (priority 10000, latency offset 0 usec, available: unknown)
                        properties:
                                device.icon_name = "audio-speakers"
                analog-output-headphones: 模拟耳机 (priority 9000, latency offset 0 usec, available: no)
                        properties:
                                device.icon_name = "audio-headphones"
        active port:
    index: 8
        name:
        driver:
        flags: HARDWARE DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
        state: SUSPENDED
        suspend cause: IDLE
        priority: 9050
        volume: front-left: 49978 /  76% / -7.06 dB,   front-right: 49978 /  76% / -7.06 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: 10
        sample spec: s16le 2ch 44100Hz
        channel map: front-left,front-right
                     立体声
        used by: 0
        linked by: 0
        configured latency: 0.00 ms; range is 0.50 .. 1999.82 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 0"
                alsa.id = "HDMI 0"
                alsa.subdevice = "0"
                alsa.subdevice_name = "subdevice #0"
                alsa.device = "3"
                alsa.card = "1"
                alsa.card_name = "HDA NVidia"
                alsa.long_card_name = "HDA NVidia at 0xfb080000 irq 17"
                alsa.driver_name = "snd_hda_intel"
                device.bus_path = "pci-0000:01:00.1"
                sysfs.path = "/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1"
                device.bus = "pci"
                device.vendor.id = "10de"
                device.vendor.name = "NVIDIA Corporation"
                device.product.id = "0bea"
                device.product.name = "GF108 High Definition Audio Controller"
                device.string = "hdmi:1"
                device.buffering.buffer_size = "352768"
                device.buffering.fragment_size = "176384"
                device.access_mode = "mmap+timer"
                device.profile.name = "hdmi-stereo"
                device.profile.description = "Digital Stereo (HDMI)"
                device.description = "GF108 High Definition Audio Controller Digital Stereo (HDMI)"
                alsa.mixer_name = "Nvidia GPU 14 HDMI/DP"
                alsa.components = "HDA:10de0014,10de0101,00100100"
                module-udev-detect.discovered = "1"
                device.icon_name = "audio-card-pci"
        ports:
                hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: no)
                        properties:
                                device.icon_name = "video-display"
        active port:

本帖最后由 yanbowen 于 2017-12-5 16:32 编辑

安装 pavucontrol 看下 配置 中有没有声卡处于关闭状态。
测试扬声器时不要插入耳机，因为插入耳机后扬声器不可用。
另外你是接了一个 hdmi 屏幕？还是使用的hdmi转接线？

如果 hdmi 不用发声的话，就在 pavucontrol 的 配置 中把 hdmi 声卡关掉

   

这问题目前来看算是无解了。主板板载声卡只支持line out接口输出，一旦换到了headphones接口，在pavucontrol 里面能看到声音条在动，可就是没声音。网上查了一些资料，貌似还要自己手动编辑配置文件，太复杂了没敢搞。

安装了，但是好像还是没有哦 。暂时不管他了 。先用耳机吧

本帖最后由 redskywei 于 2017-12-15 09:54 编辑

好多设置，我第一个选择关闭，第二个选择4.1是否有问题哦。 其中第一个选项中有个hdmi是没有显示拔出，其他都是拔出。但是我选关闭或者HDMI4都是没声音。不知道到底改修改哪里才好了 。

我第一个选项里选择那个HDMI4，第二个选择5.1输出，居然声音恢复了。呵呵