I can confirm that this still happens on Ubuntu Gutsy. Only the left FRONT channel. I tested the back channels (4.1 surround) and those are fine. (Some people might be able to use this as a workaround.)
** Attachment added: "amixer.txt" http://launchpadlibrarian.net/9892914/amixer.txt -- 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