0.098| 0.000) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_channels(4) failed: Invalid argument 0.098| 0.000) D: [pulseaudio] alsa-mixer.c: Skipping profile output:analog-surround-40+input:analog-stereo-input - will not be able to open output:analog-surround-40 Seem not support 4 channels playback which is different from your claim But 41 is supported 0.098| 0.000) D: [pulseaudio] alsa-mixer.c: Looking at profile output:analog-surround-41 ( 0.098| 0.000) D: [pulseaudio] alsa-mixer.c: Checking for playback on Analog Surround 4.1 (analog-surround-41) ( 0.098| 0.000) D: [pulseaudio] alsa-util.c: Trying surround41:1 with SND_PCM_NO_AUTO_FORMAT ... ( 0.098| 0.000) D: [pulseaudio] alsa-util.c: Managed to open surround41:1 ( 0.098| 0.000) I: [pulseaudio] alsa-util.c: Disabling tsched mode since BATCH flag is set ( 0.098| 0.000) D: [pulseaudio] alsa-util.c: Maximum hw buffer size is 1213 ms ( 0.099| 0.000) D: [pulseaudio] alsa-util.c: Set buffer size first (to 4797 samples), period size second (to 1199 samples). ( 0.099| 0.000) I: [pulseaudio] alsa-util.c: Device surround41:1 doesn't support 44100 Hz, changed to 48000 Hz. ( 0.099| 0.000) D: [pulseaudio] alsa-mixer.c: Profile output:analog-surround-41 supported. Your capture device 1 seem support S24_3LE 0.101| 0.000) D: [pulseaudio] alsa-util.c: Managed to open hw:1,1,0 ( 0.101| 0.000) I: [pulseaudio] alsa-util.c: Disabling tsched mode since BATCH flag is set ( 0.101| 0.000) D: [pulseaudio] alsa-util.c: Maximum hw buffer size is 3640 ms ( 0.101| 0.000) I: [pulseaudio] (alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_HW_PARAMS failed (-5) ( 0.101| 0.000) I: [pulseaudio] (alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_HW_PARAMS failed (-5) ( 0.102| 0.000) I: [pulseaudio] (alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_HW_PARAMS failed (-5) ( 0.102| 0.000) I: [pulseaudio] (alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_HW_PARAMS failed (-5) ( 0.102| 0.000) D: [pulseaudio] alsa-util.c: Set neither period nor buffer size. ( 0.103| 0.000) I: [pulseaudio] (alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_HW_PARAMS failed (-5) ( 0.103| 0.000) I: [pulseaudio] alsa-util.c: snd_pcm_hw_params failed: Input/output error ( 0.103| 0.000) D: [pulseaudio] alsa-util.c: Trying hw:1,1,0 without SND_PCM_NO_AUTO_FORMAT ... ( 0.103| 0.000) D: [pulseaudio] alsa-util.c: Managed to open hw:1,1,0 ( 0.103| 0.000) I: [pulseaudio] alsa-util.c: Disabling tsched mode since BATCH flag is set ( 0.103| 0.000) D: [pulseaudio] alsa-util.c: Maximum hw buffer size is 3640 ms ( 0.104| 0.000) I: [pulseaudio] (alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_HW_PARAMS failed (-5) ( 0.104| 0.000) I: [pulseaudio] (alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_HW_PARAMS failed (-5) ( 0.104| 0.000) I: [pulseaudio] (alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_HW_PARAMS failed (-5) ( 0.105| 0.000) I: [pulseaudio] (alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_HW_PARAMS failed (-5) ( 0.105| 0.000) D: [pulseaudio] alsa-util.c: Set neither period nor buffer size. ( 0.105| 0.000) I: [pulseaudio] (alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_HW_PARAMS failed (-5) ( 0.105| 0.000) I: [pulseaudio] alsa-util.c: snd_pcm_hw_params failed: Input/output error Not sure why it fail with Input/output error ( 0.105| 0.000) D: [pulseaudio] alsa-util.c: Trying plug:hw:1,1,0 with SND_PCM_NO_AUTO_FORMAT ... Seem default format change to S24_3LE 0.065| 0.000) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_format(Signed 24 bit Little Endian in 3bytes) failed: Invalid argument ( 0.065| 0.000) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_format(Signed 24 bit Big Endian in 3bytes) failed: Invalid argument ( 0.065| 0.000) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_format(Float 32 bit Little Endian) failed: Invalid argument ( 0.065| 0.000) D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_format(Float 32 bit Big Endian) failed: Invalid argument pactl list sinks How many profiles supported by omni ?