Card sysdefault:0 'NVidia'/'HDA NVidia at 0xd1080000 irq 104' Mixer name : 'Nvidia GPU 51 HDMI/DP' Components : 'HDA:10de0051,10de0000,00100100' Controls : 14 Simple ctrls : 2 Simple mixer control 'IEC958',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [on] Simple mixer control 'IEC958',1 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [on] Card sysdefault:1 'Audio'/'Generic USB Audio at usb-0000:44:00.1-6, high speed' amixer: Mixer load sysdefault:1 error: Broken pipe Mixer name : 'USB Mixer' Components : 'USB0b05:1918' Controls : 25 amixer: Mixer sysdefault:1 load error: Broken pipe