Card sysdefault:0 'HDMI'/'HDA Intel HDMI at 0xa331c000 irq 52' Mixer name : 'Intel Broadwell HDMI' Components : 'HDA:80862808,80860101,00100000' Controls : 21 Simple ctrls : 3 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] Simple mixer control 'IEC958',2 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [on]