Comment 92 for bug 941219

"I don't think that it's a good idea to mark this bug as "fix committed" just because it is fixed in a mainline kernel. Mainline kernels are for trying things out and this "fix" will not propagate into normal 12.04 updates, so will not fix the problem for the majority of users. Even if you do use this kernel, you will not get any kernel security updates from the supported 12.04 kernel (currently 3.2.0-24)." I agree. Ubuntu 12.04 is long term support!

"I have exactly the same problem (speakers don't mute when headphone jack inserted), but I'm not using an Acer. Would my information most usefully go in this bug report, or should I start a new one? It would seem silly to have a new report for every bit of hardware if there is a problem common to many platforms, on the other hand it would be good not to confuse two different causes if this particular one is Acer-specific." I do not this it is necessary start a new bug.