If i connect my headphones the speaker still work is that a bug? or that suppose to happen just like that that never happen to me before.
Yes, this is a bug.
You can try to install the
If that doesn't fix it, please run the following command, and follow the instructions:
This will collect info about your audio hardware & software configuration, ask some questions, and submit this to the bugtracker on Launchpad (if you don't have a Launchpad account yet, you will be asked to create one). Once you are on Launchpad, make sure you add a clear description of the problem. E.g. if it worked in earlier Ubuntu-versions, pleas tell which one(s).