Your screenshot corroborates the fact that mic boost is zeroed, which generally results in very quiet or inaudible capture:
Simple mixer control 'Mic Boost',0 Capabilities: volume penum Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: 0 - 3 Front Left: 0 [0%] <--- Front Right: 0 [0%] <--- You actually need to set the slider to 100% or higher. ** Changed in: pulseaudio (Ubuntu) Status: New => Opinion -- acer aspire 1551 build in mic is not working in pulseaudio apps https://bugs.launchpad.net/bugs/682065 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs