Please update your alsa drivers, as outlined here: https://wiki.ubuntu.com/Audio/InstallingLinuxAlsaDriverModules and reboot. Please report back as to whether this helps fix your issue.
affects ubuntu/alsa-driver status incomplete ** Changed in: alsa-driver (Ubuntu) Status: New => Incomplete -- [Realtek ALC259] ALSA test tone not correctly played back https://bugs.launchpad.net/bugs/631288 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs