我刚刚安装了 Kubuntu 12.04 的电脑无法播放声音。我尝试在声音设置中切换两个音频选项，但仍然不起作用。有什么想法吗？谢谢！
答案1
抱歉，我知道我不应该将此作为答案发布，但我找不到可以添加评论的地方。谢谢！
以下是结果：lspci -nnk | grep -iA3 audio
john-hill@john-hill-E-4100:~$ lspci -nnk | grep -iA3 audio
00:1f.5 Multimedia audio controller [0401]: Intel Corporation 82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller [8086:24d5] (rev 02)
Subsystem: Gateway 2000 Device [107b:2019]
Kernel driver in use: snd_intel8x0
Kernel modules: snd-intel8x0
01:00.0 Multimedia audio controller [0401]: Creative Labs SB Audigy [1102:0004] (rev 03)
Subsystem: Creative Labs SB0090 Audigy Player/OEM [1102:0058]
Kernel driver in use: snd_emu10k1
Kernel modules: snd-emu10k1
john-hill@john-hill-E-4100:~$
这是：speaker-test 的结果
john-hill@john-hill-E-4100:~$ speaker-test
speaker-test 1.0.25
Playback device is default
Stream parameters are 48000Hz, S16_LE, 1 channels
Using 16 octaves of pink noise
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 192 to 2097152
Period size range from 64 to 699051
Using max buffer size 2097152
Periods = 4
was set period_size = 524288
was set buffer_size = 2097152
0 - Front Left
以下是 amixer 的结果
john-hill@john-hill-E-4100:~$ amixer
Simple mixer control 'Master',0
Capabilities: pvolume pswitch penum
Playback channels: Front Left - Front Right
Limits: Playback 0 - 31
Mono:
Front Left: Playback 31 [100%] [0.00dB] [on]
Front Right: Playback 31 [100%] [0.00dB] [on]
Simple mixer control 'Master Mono',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
Playback channels: Mono
Limits: Playback 0 - 31
Mono: Playback 0 [0%] [-46.50dB] [off]
Simple mixer control 'Headphone',0
Capabilities: pvolume pswitch penum
Playback channels: Front Left - Front Right
Limits: Playback 0 - 31
Mono:
Front Left: Playback 31 [100%] [0.00dB] [on]
Front Right: Playback 31 [100%] [0.00dB] [on]
Simple mixer control 'Headphone Jack Sense',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [off]
Simple mixer control 'PCM',0
Capabilities: pvolume pswitch penum
Playback channels: Front Left - Front Right
Limits: Playback 0 - 31
Mono:
Front Left: Playback 31 [100%] [12.00dB] [on]
Front Right: Playback 31 [100%] [12.00dB] [on]
Simple mixer control 'Line',0
Capabilities: pvolume pswitch cswitch cswitch-exclusive penum
Capture exclusive group: 0
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: Playback 0 - 31
Front Left: Playback 31 [100%] [12.00dB] [off] Capture [off]
Front Right: Playback 31 [100%] [12.00dB] [off] Capture [off]
Simple mixer control 'Line Jack Sense',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [off]
Simple mixer control 'CD',0
Capabilities: pvolume pswitch cswitch cswitch-exclusive penum
Capture exclusive group: 0
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: Playback 0 - 31
Front Left: Playback 31 [100%] [12.00dB] [off] Capture [off]
Front Right: Playback 31 [100%] [12.00dB] [off] Capture [off]
Simple mixer control 'Mic',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined cswitch cswitch-exclusive penum
Capture exclusive group: 0
Playback channels: Mono
Capture channels: Front Left - Front Right
Limits: Playback 0 - 31
Mono: Playback 0 [0%] [-34.50dB] [off]
Front Left: Capture [on]
Front Right: Capture [on]
Simple mixer control 'Mic Boost (+20dB)',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [off]
Simple mixer control 'Mic Select',0
Capabilities: enum
Items: 'Mic1' 'Mic2'
Item0: 'Mic1'
Simple mixer control 'Video',0
Capabilities: cswitch cswitch-exclusive penum
Capture exclusive group: 0
Capture channels: Front Left - Front Right
Front Left: Capture [off]
Front Right: Capture [off]
Simple mixer control 'Phone',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined cswitch cswitch-exclusive penum
Capture exclusive group: 0
Playback channels: Mono
Capture channels: Front Left - Front Right
Limits: Playback 0 - 31
Mono: Playback 0 [0%] [-34.50dB] [off]
Front Left: Capture [off]
Front Right: Capture [off]
Simple mixer control 'Aux',0
Capabilities: pvolume pswitch cswitch cswitch-exclusive penum
Capture exclusive group: 0
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: Playback 0 - 31
Front Left: Playback 0 [0%] [-34.50dB] [off] Capture [off]
Front Right: Playback 0 [0%] [-34.50dB] [off] Capture [off]
Simple mixer control 'Mono Output Select',0
Capabilities: enum
Items: 'Mix' 'Mic'
Item0: 'Mix'
Simple mixer control 'Capture',0
Capabilities: cvolume cswitch penum
Capture channels: Front Left - Front Right
Limits: Capture 0 - 15
Front Left: Capture 8 [53%] [12.00dB] [on]
Front Right: Capture 8 [53%] [12.00dB] [on]
Simple mixer control 'Mix',0
Capabilities: cswitch cswitch-exclusive penum
Capture exclusive group: 0
Capture channels: Front Left - Front Right
Front Left: Capture [off]
Front Right: Capture [off]
Simple mixer control 'Mix Mono',0
Capabilities: cswitch cswitch-exclusive penum
Capture exclusive group: 0
Capture channels: Front Left - Front Right
Front Left: Capture [off]
Front Right: Capture [off]
Simple mixer control 'External Amplifier',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'Stereo Mic',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [off]
john-hill@john-hill-E-4100:~$
答案2
我也遇到了这个问题，但我能够在终端之外找到一个简单的解决方案。我尝试了在线找到的所有信息（http://ubuntuforums.org/showthread.php?t=2238366）<- 是一个很好的总结，但是没有任何作用。
我关注了这一点，
单击栏上的声音图标
忽略下拉式搅拌器，它撒谎了！
选择“Mixer”手动打开“KDE Mixer - 播放设备”
出于某种原因，我的内置模拟（耳机插孔）被完全关闭了。尝试在系统设置中指定它也没有用。这个 KDE Mixer 似乎是个窍门。
希望能帮助到你！
- 傻瓜技巧