Invalid input device (no default output device)

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ALSA lib conf.c:3723:(snd_config_hooks_call) Cannot open shared library libasound_module_conf_pulse.so (libasound_module_conf_pulse.so: libasound_module_conf_pulse.so: cannot open shared object file: No such file or directory)
ALSA lib control.c:1379:(snd_ctl_open_noupdate) Invalid CTL hw:0
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.bcm2835_headpho.pcm.front.0:CARD=0'
ALSA lib conf.c:4743:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5231:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM front
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround21
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround21
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround40
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround41
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround50
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround51
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround71
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.bcm2835_headpho.pcm.iec958.0:CARD=0,AES0=4,AES1=130,AES2=0,AES3=2'
ALSA lib conf.c:4743:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5231:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM iec958
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.bcm2835_headpho.pcm.iec958.0:CARD=0,AES0=4,AES1=130,AES2=0,AES3=2'
ALSA lib conf.c:4743:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5231:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM spdif
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.bcm2835_headpho.pcm.iec958.0:CARD=0,AES0=4,AES1=130,AES2=0,AES3=2'
ALSA lib conf.c:4743:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5231:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM spdif
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
ALSA lib dlmisc.c:340:(snd_dlobj_cache_get0) Cannot open shared library libasound_module_rate_lavrate.so (libasound_module_rate_lavrate.so: libasound_module_rate_lavrate.so: cannot open shared object file: No such file or directory)
ALSA lib pcm_rate.c:1468:(snd_pcm_rate_open) Cannot find rate converter
ALSA lib dlmisc.c:340:(snd_dlobj_cache_get0) Cannot open shared library libasound_module_rate_samplerate.so (libasound_module_rate_samplerate.so: libasound_module_rate_samplerate.so: cannot open shared object file: No such file or directory)
ALSA lib pcm_rate.c:1468:(snd_pcm_rate_open) Cannot find rate converter
ALSA lib dlmisc.c:340:(snd_dlobj_cache_get0) Cannot open shared library libasound_module_rate_speexrate.so (libasound_module_rate_speexrate.so: libasound_module_rate_speexrate.so: cannot open shared object file: No such file or directory)
ALSA lib pcm_rate.c:1468:(snd_pcm_rate_open) Cannot find rate converter
ALSA lib dlmisc.c:340:(snd_dlobj_cache_get0) Cannot open shared library libasound_module_pcm_jack.so (libasound_module_pcm_jack.so: libasound_module_pcm_jack.so: cannot open shared object file: No such file or directory)
ALSA lib dlmisc.c:340:(snd_dlobj_cache_get0) Cannot open shared library libasound_module_pcm_jack.so (libasound_module_pcm_jack.so: libasound_module_pcm_jack.so: cannot open shared object file: No such file or directory)
ALSA lib dlmisc.c:340:(snd_dlobj_cache_get0) Cannot open shared library libasound_module_pcm_oss.so (libasound_module_pcm_oss.so: libasound_module_pcm_oss.so: cannot open shared object file: No such file or directory)
ALSA lib dlmisc.c:340:(snd_dlobj_cache_get0) Cannot open shared library libasound_module_pcm_oss.so (libasound_module_pcm_oss.so: libasound_module_pcm_oss.so: cannot open shared object file: No such file or directory)
ALSA lib dlmisc.c:340:(snd_dlobj_cache_get0) Cannot open shared library libasound_module_pcm_pulse.so (libasound_module_pcm_pulse.so: libasound_module_pcm_pulse.so: cannot open shared object file: No such file or directory)
ALSA lib dlmisc.c:340:(snd_dlobj_cache_get0) Cannot open shared library libasound_module_pcm_pulse.so (libasound_module_pcm_pulse.so: libasound_module_pcm_pulse.so: cannot open shared object file: No such file or directory)
ALSA lib dlmisc.c:340:(snd_dlobj_cache_get0) Cannot open shared library libasound_module_pcm_a52.so (libasound_module_pcm_a52.so: libasound_module_pcm_a52.so: cannot open shared object file: No such file or directory)
ALSA lib dlmisc.c:340:(snd_dlobj_cache_get0) Cannot open shared library libasound_module_pcm_a52.so (libasound_module_pcm_a52.so: libasound_module_pcm_a52.so: cannot open shared object file: No such file or directory)
ALSA lib dlmisc.c:340:(snd_dlobj_cache_get0) Cannot open shared library libasound_module_pcm_upmix.so (libasound_module_pcm_upmix.so: libasound_module_pcm_upmix.so: cannot open shared object file: No such file or directory)
ALSA lib dlmisc.c:340:(snd_dlobj_cache_get0) Cannot open shared library libasound_module_pcm_upmix.so (libasound_module_pcm_upmix.so: libasound_module_pcm_upmix.so: cannot open shared object file: No such file or directory)
ALSA lib dlmisc.c:340:(snd_dlobj_cache_get0) Cannot open shared library libasound_module_pcm_vdownmix.so (libasound_module_pcm_vdownmix.so: libasound_module_pcm_vdownmix.so: cannot open shared object file: No such file or directory)
ALSA lib dlmisc.c:340:(snd_dlobj_cache_get0) Cannot open shared library libasound_module_pcm_vdownmix.so (libasound_module_pcm_vdownmix.so: libasound_module_pcm_vdownmix.so: cannot open shared object file: No such file or directory)
ALSA lib dlmisc.c:340:(snd_dlobj_cache_get0) Cannot open shared library libasound_module_pcm_usb_stream.so (libasound_module_pcm_usb_stream.so: libasound_module_pcm_usb_stream.so: cannot open shared object file: No such file or directory)
ALSA lib dlmisc.c:340:(snd_dlobj_cache_get0) Cannot open shared library libasound_module_pcm_usb_stream.so (libasound_module_pcm_usb_stream.so: libasound_module_pcm_usb_stream.so: cannot open shared object file: No such file or directory)
Traceback (most recent call last):
File "/home/pi/Documents/test.py", line 11, in
mic_stream = SimpleMicStream()
File "/home/pi/Documents/eff_word_net/streams.py", line 71, in init
mic_stream=p.open(
File "/home/pi/Downloads/yes/envs/eff/lib/python3.8/site-packages/pyaudio.py", line 750, in open
stream = Stream(self, *args, **kwargs)
File "/home/pi/Downloads/yes/envs/eff/lib/python3.8/site-packages/pyaudio.py", line 441, in init
self._stream = pa.open(**arguments)
OSError: [Errno -9996] Invalid input device (no default output device)

I have encountered this problem. How can I solve it?

[Aman Rangapur]

I guess you are using Ras-Pi without a mic which is throwing this issue.

[Chidhambararajan]

Closing issue due to inactivity , pls feel free to open again