我在装有 Nvidia 显卡的旧笔记本电脑上安装了 Lubuntu。但是，当我尝试通过 DisplayPort 将其连接到电视时，却听不到任何声音。
我检查了 Nvidia 配置，没有地方可以设置输出到数字 DisplayPort 的声音。
我也安装pavucontrol并尝试重新加载了alsa几次。但我仍然没有在配置选项卡中获得数字输出pavucontrol。
此外，我发现笔记本电脑的内置扬声器根本不起作用（它一直连接到扬声器，我不知道它在去年什么时候停止工作）。
我想知道是否有一种解决方法可以通过 DisplayPort 获取声音（或者是因为我使用了 DisplayPort 到 HDMI 转换器？）
sudo lshw -c display,sound以下是和的输出pactl list cards：
$ sudo lshw -c display,sound
*-display
description: VGA compatible controller
product: G94GLM [Quadro FX 2700M]
vendor: NVIDIA Corporation
physical id: 0
bus info: pci@0000:01:00.0
version: a1
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
configuration: driver=nvidia latency=0
resources: irq:34 memory:f5000000-f5ffffff memory:e0000000-efffffff memory:f2000000-f3ffffff ioport:df00(size=128) memory:f6e00000-f6e7ffff
*-usb
description: Video
product: Laptop_Integrated_Webcam_2M
vendor: CN0RPNX6724879CAAGRD
physical id: 6
bus info: usb@1:6
version: 95.18
capabilities: usb-2.00
configuration: driver=uvcvideo maxpower=168mA speed=480Mbit/s
*-multimedia
description: Audio device
product: 82801I (ICH9 Family) HD Audio Controller
vendor: Intel Corporation
physical id: 1b
bus info: pci@0000:00:1b.0
version: 02
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=snd_hda_intel latency=0
resources: irq:32 memory:f6ffc000-f6ffffff
$ pactl list cards
Card #0
Name: alsa_card.pci-0000_00_1b.0
Driver: module-alsa-card.c
Owner Module: 6
Properties:
alsa.card = "0"
alsa.card_name = "HDA Intel"
alsa.long_card_name = "HDA Intel at 0xf6ffc000 irq 32"
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 = "293e"
device.product.name = "82801I (ICH9 Family) HD Audio Controller"
device.form_factor = "internal"
device.string = "0"
device.description = "Built-in Audio"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
Profiles:
input:analog-stereo: Analogue Stereo Input (sinks: 0, sources: 1, priority: 60, available: yes)
output:analog-stereo: Analogue Stereo Output (sinks: 1, sources: 0, priority: 6000, available: yes)
output:analog-stereo+input:analog-stereo: Analogue Stereo Duplex (sinks: 1, sources: 1, priority: 6060, available: yes)
off: Off (sinks: 0, sources: 0, priority: 0, available: yes)
Active Profile: output:analog-stereo+input:analog-stereo
Ports:
analog-input-internal-mic: Internal Microphone (priority: 8900, latency offset: 0 usec)
Properties:
device.icon_name = "audio-input-microphone"
Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo
analog-input-dock-mic: Dock Microphone (priority: 7800, latency offset: 0 usec, not available)
Properties:
device.icon_name = "audio-input-microphone"
Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo
analog-input-mic: Microphone (priority: 8700, latency offset: 0 usec, not available)
Properties:
device.icon_name = "audio-input-microphone"
Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo
analog-output-lineout: Line Out (priority: 9900, latency offset: 0 usec, not available)
Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo
analog-output-speaker: Speakers (priority: 10000, latency offset: 0 usec, not available)
Properties:
device.icon_name = "audio-speakers"
Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo
analog-output-headphones: Headphones (priority: 9000, latency offset: 0 usec, available)
Properties:
device.icon_name = "audio-headphones"
Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo
答案1
转到系统设置->声音，您应该会看到 HDMI/DisplayPort2 的选项，选择它并尝试更改模式直到它正常工作。
使用测试声音按钮来产生噪音。
另外，请检查音量是否调高到足以在显示器上听到声音，您可能需要通过屏幕显示来执行此操作。它可能没有自己的扬声器，但有一个耳机输出口，您可以插入一些。