Hi Samantha and thanks for your bug report. I have the same problem here on the x100e (see bug 741825) and I believe it is related to the AMD/ATI southbridge. So far I've been unable to solve it, it might be a chipset bug.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/764062 Title: Lenovo X120e sporadic auto-mute [0596CTO, Conexant CX20582 (Pebble), Black Headphone Out, Left] -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs