Can you try installing the linux-backports-modules ? It almost solved the distortion on my macbook 1st gen.
-- left-channel distortion on intel-hda https://bugs.launchpad.net/bugs/75906 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
