alsa问题python2.7-无法打开slave
我使用python的模块pyaudio来处理声音,但ALSA返回:
ALSA lib pcm_dsnoop.c:618:(snd_pcm_dsnoop_open) unable to open slave ALSA lib pcm_dmix.c:1022:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side bt_audio_service_open: connect() failed: Connection refused (111) bt_audio_service_open: connect() failed: Connection refused (111) bt_audio_service_open: connect() failed: Connection refused (111) bt_audio_service_open: connect() failed: Connection refused (111) ALSA lib pcm_dmix.c:1022:(snd_pcm_dmix_open) unable to open slave Cannot connect to server socket err = No such file or directory Cannot connect to server request channel jack server is not running or cannot be started
Alsa在录制声音和从终端播放时效果很好,但是python(2.7)不断返回这些错误。 我不知道它是否相关,但我也可以双启动到Windows 8.1。
这可以摆脱未知设备消息: sudo nano /usr/share/alsa/alsa.conf
并注释掉cards.pcm.{device}
其中{device}
是列出的未知设备
这将摆脱杰克服务器错误,不确定其他人
sudo apt install multimedia-jack pulseaudio --kill jack_control start
如果在运行后出现内存错误,请注销/登录:
sudo usermod -a -G audio MYUSERNAME
确保您已注销,否则权限将不会更新。
您可能需要运行:
jack_control start
再次