Computer: Acer Aspire 6920
Card: HDA Intel
Chip: Realtek ALC889
My problem is that the laptop build-in speakers don't play any sound. When i plug in my headphones the sound works normally, the same goes with external speakers. Those work normally like the headphones.
The profile in the Sound settings is Analog two-way Stereo.
I am using Ubuntu 12.04.
Might trere be any problem with my sound drivers or something similar?
Any form of help appreciated.