如何解决ALSA lib pcm_hw.c:1829:(_snd_pcm_hw_open) 卡的值无效
我目前正在尝试使用 ALSA 库来发出声音。但是,我收到以下错误:
Setting random seed to 345.
Adding stimulus TestBeep...
ALSA lib pcm_hw.c:1829:(_snd_pcm_hw_open) Invalid value for card
Process Process-1:
Traceback (most recent call last):
File "/usr/lib/python3.8/multiprocessing/process.py",line 315,in _bootstrap
self.run()
File "/usr/lib/python3.8/multiprocessing/process.py",line 108,in run
self._target(*self._args,**self._kwargs)
File "../soundstimulus.py",line 36,in run_playback_process
raise e
File "../soundstimulus.py",line 32,in run_playback_process
playback_system = ALSAPlaybackSystem(device_name,config,file_dir,control_pipe,log_directory)
File "../alsainterface.py",line 214,in __init__
self.adevice = alsaaudio.PCM(device=device)
alsaaudio.ALSAAudioError: No such device [hw:CARD=SoundCard,DEV=0]
我想我确实有一个声卡,如下所示:
$ cat /proc/asound/card0/pcm0p/info
card: 0
device: 0
subdevice: 0
stream: PLAYBACK
id: ALC269VC Analog
name: ALC269VC Analog
subname: subdevice #0
class: 0
subclass: 0
subdevices_count: 1
subdevices_avail: 1
那么 invalid value for the card
是什么意思?有没有办法编辑它以使值有效?
我不确定以下内容是否相关,但很多 stackOverflow 帖子都建议 OP 运行 aplay -l
。
我的结果是
aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH],device 0: ALC269VC Analog [ALC269VC Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH],device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
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