Constant noise in speakers and headphones
Solution 1:
The most probable cause of constant noise coming in from the speakers is usually mic boost. In order to disable this:
- Open a terminal.
- Type
alsamixerand press Enter. - Reduce the
Mic BoostandInternal Mic Boostto zero. Refer to screenshot.
Solution 2:
The problem goes away after disabling the Auto-Mute mode. Run alsamixer in the terminal, scroll to the right and press up/down to enable or disable Auto-Mute mode
Solution 3:
I had this problem and solved it by disabling "loopback" in alsamixer. (open alsamixer, and disable the rightmost control)