主页 / ubuntu / 问题 / 855951
Accepted
AaronD
Asked: 2016-12-02 14:49:50 +0800 CST

MPD 无法连接到我的声卡

  • 772

这是我可用的卡片（在命令之间添加了额外的换行符以提高可读性）：

audiohub@DYM-Portable-AudioHub:~$ sudo aplay -l
[sudo] password for audiohub: 
**** List of PLAYBACK Hardware Devices ****
card 0: sunxicodec [sunxi-CODEC], device 0: M1 PCM [sunxi PCM]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: CODEC [USB Audio CODEC], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 2: X18XR18 [X18/XR18], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

audiohub@DYM-Portable-AudioHub:~$ arecord -L
null
    Discard all samples (playback) or generate zero samples (capture)
sysdefault:CARD=sunxicodec
    sunxi-CODEC, sunxi PCM
    Default Audio Device
dmix:CARD=sunxicodec,DEV=0
    sunxi-CODEC, sunxi PCM
    Direct sample mixing device
dsnoop:CARD=sunxicodec,DEV=0
    sunxi-CODEC, sunxi PCM
    Direct sample snooping device
hw:CARD=sunxicodec,DEV=0
    sunxi-CODEC, sunxi PCM
    Direct hardware device without any conversions
plughw:CARD=sunxicodec,DEV=0
    sunxi-CODEC, sunxi PCM
    Hardware device with all software conversions
sysdefault:CARD=CODEC
    USB Audio CODEC, USB Audio
    Default Audio Device
front:CARD=CODEC,DEV=0
    USB Audio CODEC, USB Audio
    Front speakers
surround40:CARD=CODEC,DEV=0
    USB Audio CODEC, USB Audio
    4.0 Surround output to Front and Rear speakers
surround41:CARD=CODEC,DEV=0
    USB Audio CODEC, USB Audio
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=CODEC,DEV=0
    USB Audio CODEC, USB Audio
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=CODEC,DEV=0
    USB Audio CODEC, USB Audio
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=CODEC,DEV=0
    USB Audio CODEC, USB Audio
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=CODEC,DEV=0
    USB Audio CODEC, USB Audio
    IEC958 (S/PDIF) Digital Audio Output
dmix:CARD=CODEC,DEV=0
    USB Audio CODEC, USB Audio
    Direct sample mixing device
dsnoop:CARD=CODEC,DEV=0
    USB Audio CODEC, USB Audio
    Direct sample snooping device
hw:CARD=CODEC,DEV=0
    USB Audio CODEC, USB Audio
    Direct hardware device without any conversions
plughw:CARD=CODEC,DEV=0
    USB Audio CODEC, USB Audio
    Hardware device with all software conversions
sysdefault:CARD=X18XR18
    X18/XR18, USB Audio
    Default Audio Device
front:CARD=X18XR18,DEV=0
    X18/XR18, USB Audio
    Front speakers
surround40:CARD=X18XR18,DEV=0
    X18/XR18, USB Audio
    4.0 Surround output to Front and Rear speakers
surround41:CARD=X18XR18,DEV=0
    X18/XR18, USB Audio
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=X18XR18,DEV=0
    X18/XR18, USB Audio
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=X18XR18,DEV=0
    X18/XR18, USB Audio
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=X18XR18,DEV=0
    X18/XR18, USB Audio
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=X18XR18,DEV=0
    X18/XR18, USB Audio
    IEC958 (S/PDIF) Digital Audio Output
dmix:CARD=X18XR18,DEV=0
    X18/XR18, USB Audio
    Direct sample mixing device
dsnoop:CARD=X18XR18,DEV=0
    X18/XR18, USB Audio
    Direct sample snooping device
hw:CARD=X18XR18,DEV=0
    X18/XR18, USB Audio
    Direct hardware device without any conversions
plughw:CARD=X18XR18,DEV=0
    X18/XR18, USB Audio
    Hardware device with all software conversions

audiohub@DYM-Portable-AudioHub:~$

板载sunxicodec没用，USBCODEC完全被占用了，为了一个不同的功能，我想mpd在USB上玩X18XR18。不管我放什么/etc/mpd.conf，gmpc总是说：

在此处输入图像描述

我目前有这个：

audio_output {
       type            "alsa"
       name            "XR18"
       device          "hw:2,0"
#       format          "48000:32:2"
}

它与 ( ) 做同样的事情"hw:1,0"，CODEC但它确实与"hw:0,0"( sunxicodec) 一起玩。不幸的是，那张卡需要一些额外的配置才能使用模拟而不是 HDMI，所以我还没有真正听到它，看看它是否听起来还不错。

我知道这两张 USB 卡可以工作，因为CODEC它的功能使用它的软件是完美的，因为audacious可以播放X18XR18，因为我可以同时arecord X18XR18：

#!/bin/sh

REC_PATH=/home/audiohub/Recordings

arecord --device=hw:CARD=X18XR18,DEV=0 --channels=18 --file-type=wav --format=S32_LE --rate=48000 --buffer-time=20000000 --max-file-time 300 "$REC_PATH/all_tracks.wav" &

# Force a filesystem sync every 1 second to keep the buffer small enough to write without missing samples
while true
do
    sleep 1
    sync
done

我也尝试了, 而不是的"hw:CARD=X18XR18,DEV=0"格式，但它做了同样的事情。/etc/mpd.conf"hw:2,0"

aplay做这个：

audiohub@DYM-Portable-AudioHub:~$ aplay --device=hw:CARD=X18XR18,DEV=0 --format=S32_LE --rate=48000 "/home/audiohub/Music/Waterlines/05 - Take Your Time.wav"
Playing WAVE '/home/audiohub/Music/Waterlines/05 - Take Your Time.wav' : Float 32 bit Little Endian, Rate 44100 Hz, Stereo
aplay: set_params:1233: Sample format non available
Available formats:
- S32_LE

audiohub@DYM-Portable-AudioHub:~$

不坚持使用的原因audacious，即使它有效，是它依赖 VNC 进行控制（这个播放器/记录器是无头的）并且 VNC 服务器在一段时间后挂断并需要重新启动。由于点唱机是唯一真正需要 GUI 控制并且mpd似乎可以完成我需要的一切的东西，因此我宁愿拥有它而不是audacious.

除了我迄今为止尝试过的之外，有什么想法可以让它发挥作用吗？

sound

1 个回答

  1. Best Answer

    设备支持的唯一格式是 S32_LE。如果 mpd 无法从文件的示例格式转换为该格式，那么您必须使用可以进行转换的 ALSA 设备（如果需要）；即，替换hw为plughw.

    • 1

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