-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 The content of /proc/asound/card0/pcm0p/sub0/hw_params is just "closed". This is as expected as the HifiBerry card is card1, its parameters given in /proc/asound/card1/pcm0p/sub0/hw_params are access: RW_INTERLEAVED format: S16_LE subformat: STD channels: 2 rate: 48000 (48000/1) period_size: 32768 buffer_size: 131072 The differences to the values prompted in the error of aplay /usr/share/sounds/alsa/Front_Right.wav seem to be the number of channels and period_size and buffer_size. If I just run speaker test with one channel (default) speaker-test -t wav I also get a similar error like aplay: speaker-test 1.0.28 Playback device is default Stream parameters are 48000Hz, S16_LE, 1 channels WAV file(s) Rate set to 48000Hz (requested 48000Hz) Buffer size range from 16 to 131072 Period size range from 8 to 65536 Using max buffer size 131072 Periods = 4 Unable to set hw params for playback: Invalid argument Setting of hwparams failed: Invalid argument So the problem seems to be the number of channels. I therefore tried to also set it explicitly for aplay but aplay --channels=2 /usr/share/sounds/alsa/Front_Right.wav still didn't work and gave "CHANNELS: 1" in the error. I hope that there is a way to fix it because it is a bit wired, that I can play mp3 files etc but no simple wav files. Kind regards, Hauke -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlcQn3UACgkQjz8jfoq989c71ACfdBx0K73m/ftMuKy+sgM/733B ijIAni5JGaQCWTxC4EUUQuu7rUboY94P =Yq18 -----END PGP SIGNATURE----- ------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user