@babaei your stac9228 support 8 channels, you have selected "line out" in "mic jack mode" control.
does your notebook support 5.1 by retasking mic jack and hp jack with line out jack in the user manual ? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/946232 Title: [Meta-bug] Missing speaker and/or internal mic port To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/946232/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs