Note the arrows below, particularly how for 'Mic' the capture level is set to zero and how for 'Mic 1' the capture is completely muted:
Simple mixer control 'Mic',0 Capabilities: cvolume cswitch cswitch-joined cswitch-exclusive Capture exclusive group: 0 Capture channels: Front Left - Front Right Limits: Capture 0 - 80 Front Left: Capture 0 [0%] [-74.00dB] [on] <--- Front Right: Capture 0 [0%] [-74.00dB] [on] <--- Simple mixer control 'Mic 1',0 Capabilities: cvolume cswitch cswitch-joined cswitch-exclusive Capture exclusive group: 0 Capture channels: Front Left - Front Right Limits: Capture 0 - 80 Front Left: Capture 6 [8%] [-68.00dB] [off] <--- Front Right: Capture 6 [8%] [-68.00dB] [off] <---
Note the arrows below, particularly how for 'Mic' the capture level is set to zero and how for 'Mic 1' the capture is completely muted:
Simple mixer control 'Mic',0
Capabilities: cvolume cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Capture channels: Front Left - Front Right
Limits: Capture 0 - 80
Front Left: Capture 0 [0%] [-74.00dB] [on] <---
Front Right: Capture 0 [0%] [-74.00dB] [on] <---
Simple mixer control 'Mic 1',0
Capabilities: cvolume cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Capture channels: Front Left - Front Right
Limits: Capture 0 - 80
Front Left: Capture 6 [8%] [-68.00dB] [off] <---
Front Right: Capture 6 [8%] [-68.00dB] [off] <---