*** This bug is a duplicate of bug 200338 *** https://bugs.launchpad.net/bugs/200338
The MCP51 mixer gets muted unless you specify correct model option. The file /usr/share/doc/alsa-base/driver/ALSA-configuration.txt.gz lists different options for driver snd-hda-intel. For instance, my mobo is ASUS M2NPV-VM, and model alsa-dig seems to work on it. You can try different model names until you get mixer unmuted. Remove snd-hda-intel module and reinstall it with correct "model", e.g., sudo rmmod snd_hda_intel sudo modprobe snd_hda_intel model=alsa-dig If the module is in use, see which process keeps it open with sudo lsof /dev/snd/* and kill the processes. As permanent fix, add line with correct module option to /etc/modprobe.d/options: options snd-hda-intel model=alsa-dig Also, make sure that you don't already have an incorrect options line. -- MCP51 HD Audio not detected in kernel 2.6.24-12-generic https://bugs.launchpad.net/bugs/200523 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