I'm using Lenovo Y410p. After I plug in the headphones, there's constant buzzing noise from speaker. If I unplug them, the noise disappears.
If I disable "Auto-Mute Mode" through alsamixer, the noise disappeared immediately while the headphones are stilled plugged in. And the noise came back immediately if I enable "Auto-Mute Mode". But this is not a good solution because the feature of auto switching to headphones or speaker is gone.
Btw, my problem is similar to this one except that the noise remains whether playing music or not.
Thank you very much!