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Alsamixer 从 10.04 升级到 12.04 后缺少控件

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Alsamixer 从 10.04 升级到 12.04 后缺少控件

我们之前在 Q7 英特尔平台 + 使用英特尔 HDA 声卡的定制硬件上加载了 Ubuntu 10.04。声音效果很好。

我们昨天换到了 12.04，输出（扬声器）声音正常，但“线路”输入声音无效。有趣的是，alsamixer 现在缺少 10.04 下标有“数字”的控件。12.04 中有一个新的 SPDIF 控件，但它既没有静音也没有滑块；它只是在那里。

另一个有趣的小道消息是，如果有帮助的话，声音控制内置的声音测试将播放“左前”，而不是“右前”，即使立体声输出连接在一起并绑定到一个扬声器。

我已经完成 alsactl init 然后重新启动。

这是 amixer 的当前输出。

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 'PCM',0
  Capabilities: pvolume penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 217 [85%] [-7.60dB]
  Front Right: Playback 217 [85%] [-7.60dB]
Simple mixer control 'Line',0
  Capabilities: pvolume pswitch penum
  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',0
  Capabilities: pvolume pswitch penum
  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 penum
  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: cswitch cswitch-joined penum
  Capture channels: Mono
  Mono: Capture [on]
Simple mixer control 'Beep',0
  Capabilities: pvolume pswitch penum
  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 'Capture',0
  Capabilities: cvolume cswitch penum
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 31
  Front Left: Capture 16 [52%] [12.00dB] [on]
  Front Right: Capture 16 [52%] [12.00dB] [on]
Simple mixer control 'Capture',1
  Capabilities: cvolume cswitch penum
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 31
  Front Left: Capture 0 [0%] [-12.00dB] [on]
  Front Right: Capture 0 [0%] [-12.00dB] [on]
Simple mixer control 'Capture',2
  Capabilities: cvolume cswitch penum
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 31
  Front Left: Capture 3 [10%] [-7.50dB] [on]
  Front Right: Capture 3 [10%] [-7.50dB] [on]
Simple mixer control 'Input Source',0
  Capabilities: cenum
  Items: 'Mic' 'Line'
  Item0: 'Line'
Simple mixer control 'Input Source',1
  Capabilities: cenum
  Items: 'Mic' 'Line'
  Item0: 'Mic'
Simple mixer control 'Input Source',2
  Capabilities: cenum
  Items: 'Mic' 'Line'
  Item0: 'Mic'

有人有什么建议吗？

答案1

我知道初始安装后我的右声道声音很低，直到我调整了混音器设置后它似乎突然恢复了活力。您是否调整了所有的混音器设置？

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