I also had exactly the same problem like you guys. I fixed it with just typing 4 commands. I hope it works for you:
sudo apt-get install module-assistant sudo m-a update sudo m-a prepare sudo m-a a-i alsa After this you just have to restart your system. It should work now -- alsamixer broken in hardy - intel hda https://bugs.launchpad.net/bugs/192382 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