Laptop speakers whistling when I connect the jack for earphones
Hi, I have Acer Extensa 5220. After installing Ubuntu, the laptop speakers began to produce a high pitched whistle noise when I connect the jack for earphones or external speakers. Maybe it has something to do muting the speakers when the jack is in - they are mute but they squeal all the time. This problem never occur ed with Windows so it seems to be a software issue.
Can anyone tell help me with this,