New answers tagged jack
It does look like you're boosting your mic gain; that does make noise more pronounced. Also, you probably have too many mics active. You should methodically go through each capture option and mute it, and then unmute one-by-one until you identify the one you actually are using.
I found out that the problem can be easily circumvented, by checking for the specific plug/unplug event on the jack. The solution below will give the script the information about the specific jack events, which will mute sound, when the jack is unplugged. /etc/acpi/events/jack: event=jack[ /]headphone action=/etc/acpi/actions/jack.sh "%e" ...
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