我有一台装有 Ubuntu Eoan 的笔记本电脑。单声卡、单耳机插孔。
我想同时使用笔记本电脑扬声器和耳机（没有特别的原因，只是因为），但是一旦我插入耳机，扬声器就变得不可用。
我尝试启用同时输出，删除 -switch-on-connect 和 -switch-on-port-available 模块并创建虚拟接收器，但没有任何效果。谷歌搜索只返回相反的问题，即人的问题不是想要扬声器和耳机同时播放。
有人有解决办法吗？
输出amixer -c0：
Capabilities: pvolume pvolume-joined pswitch pswitch-joined
Playback channels: Mono
Limits: Playback 0 - 87
Mono: Playback 87 [100%] [0.00dB] [on]
Simple mixer control 'Headphone',0
Capabilities: pvolume pswitch
Playback channels: Front Left - Front Right
Limits: Playback 0 - 87
Mono:
Front Left: Playback 87 [100%] [0.00dB] [on]
Front Right: Playback 87 [100%] [0.00dB] [on]
Simple mixer control 'Speaker',0
Capabilities: pvolume pswitch
Playback channels: Front Left - Front Right
Limits: Playback 0 - 87
Mono:
Front Left: Playback 0 [0%] [-65.25dB] [off]
Front Right: Playback 0 [0%] [-65.25dB] [off]
Simple mixer control 'PCM',0
Capabilities: pvolume
Playback channels: Front Left - Front Right
Limits: Playback 0 - 255
Mono:
Front Left: Playback 255 [100%] [0.00dB]
Front Right: Playback 255 [100%] [0.00dB]
Simple mixer control 'Mic',0
Capabilities: pvolume pswitch
Playback channels: Front Left - Front Right
Limits: Playback 0 - 31
Mono:
Front Left: Playback 0 [0%] [-34.50dB] [off]
Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Mic Boost',0
Capabilities: volume
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 3
Front Left: 0 [0%] [0.00dB]
Front Right: 0 [0%] [0.00dB]
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [off]
Simple mixer control 'Capture',0
Capabilities: cvolume cswitch
Capture channels: Front Left - Front Right
Limits: Capture 0 - 63
Front Left: Capture 47 [75%] [18.00dB] [on]
Front Right: Capture 47 [75%] [18.00dB] [on]
Simple mixer control 'Auto-Mute Mode',0
Capabilities: enum
Items: 'Disabled' 'Enabled'
Item0: 'Enabled'
Simple mixer control 'Internal Mic',0
Capabilities: pvolume pswitch
Playback channels: Front Left - Front Right
Limits: Playback 0 - 31
Mono:
Front Left: Playback 0 [0%] [-34.50dB] [off]
Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Internal Mic Boost',0
Capabilities: volume
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 3
Front Left: 0 [0%] [0.00dB]
Front Right: 0 [0%] [0.00dB]
Simple mixer control 'Loopback Mixing',0
Capabilities: enum
Items: 'Disabled' 'Enabled'
Item0: 'Disabled'
答案1
通过 ALSA 中的此设置插入耳机时，扬声器将静音
Simple mixer control 'Auto-Mute Mode',0
Capabilities: enum
Items: 'Disabled' 'Enabled'
Item0: 'Enabled'
将此更改为残疾人
amixer -c0 sset 'Auto-Mute Mode' Disabled
并保存ALSA设置，以便ALSA在系统恢复时保留设置
sudo alsactl store
答案2
连接耳机后，alsamixer在终端中运行，F6按 选择您的声卡，然后：
- 禁用
Auto-Mute Mode：移至Auto-Mute Mode，然后向下键禁用。 （nik gnomic 的答案也适用于此） - 取消静音
Speaker并将音量增大至 100%：移至Speaker，按M取消静音，然后按 UP 或 PgUP 增大音量。
这些是对我有用的步骤。