Hi Yu-Hsuan, I have encountered another problem with the alsa conformance test. It works for capture, but not for playback. The device is - http://wiki.seeedstudio.com/ReSpeaker_6-Mic_Circular_Array_kit_for_Raspberry_Pi/ and running on a pi / raspbian buster. The actual message is: Fail - ALSA lib pcm_hw.c:1822:(_snd_pcm_hw_open) Invalid value for card snd_pcm_open hw:CARD=seeed8micvoi: No such device I think the truncation is harmless . The actual device name according to aplay -L is "hw:CARD=seeed8micvoicec,DEV=0" and as I noted earlier, arecord -L shows it as "hw:CARD=seeed8micvoicec,DEV=0" also, and the comformance test running in CAPTURE mode works, just not in PLAYBACK mode. Is there anything I can do to look further? Since it says "invalid value", I tried deleting the parameters around line 190 of src/alsa_conformance_helper.c, but perhaps I should do something else? src/alsa_conformance_helper.c-191- conformance_timer_start(timer, SND_PCM_OPEN); src/alsa_conformance_helper.c:192: rc = snd_pcm_open(handle, src/alsa_conformance_helper.c-193- dev_name, src/alsa_conformance_helper.c-194- stream, src/alsa_conformance_helper.c-195- SND_PCM_NONBLOCK | src/alsa_conformance_helper.c-196- SND_PCM_NO_AUTO_RESAMPLE | src/alsa_conformance_helper.c-197- SND_PCM_NO_AUTO_CHANNELS | src/alsa_conformance_helper.c-198- SND_PCM_NO_AUTO_FORMAT); src/alsa_conformance_helper.c-199- conformance_timer_stop(timer, SND_PCM_OPEN); Regards, Hin-Tak _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
