On 06/28/2012 10:47 PM, David Henningsson wrote: > On 06/28/2012 06:44 PM, Tanu Kaskinen wrote: >> On Thu, 2012-06-28 at 16:27 +0200, David Henningsson wrote: >>> Some ASUS netbooks, such as the 1015 CX, have only one 3.5 mm jack, >>> but it can be used either as a headphone or as a mic (but not both >>> simultaneously). >>> >>> This patch adds support for the "Headphone Mic" path that is used >>> on these devices, so that we can use the jack as an external mic, and >>> doing so without muting the speaker. >>> >>> BugLink: https://bugs.launchpad.net/bugs/1018262 >>> Signed-off-by: David Henningsson <david.henningsson at canonical.com> >> >> The patch looks good to me, but I have a question: with this "Headphone >> Mic", will the associated input and output paths always have "unknown" >> as the availability state when there's something plugged in? > > "Unknown" when it is plugged in, and "no" when it is unplugged. Maybe I > should add the state.unplugged as well for clarity. > >> Does alsa >> provide any means to figure out which one actually is being used, and if >> so, what are we missing in pulseaudio to make this work better? > > There's no autodetection by the hardware of what has been plugged in. > > The way it's implemented in ALSA is that there is a "Input Source" kctl, > and if you set it to "Headphone Mic" the jack retasks as mic, and if you > set it to "Internal Mic", the jack retasks as headphone. > > In Windows 7, there is a popup when you plug in asking "Hey, what did > you plug in?" and you select Headphone or Mic manually that way. I guess > that would provide some extra level of elegance, but at least having a > way of using the external mic would be good enough for me at this point. Pushed. After having done two adjustments based on feedback from people with the hardware. -- David Henningsson, Canonical Ltd. https://launchpad.net/~diwic
