On Mon, 2014-11-03 at 06:58 +0800, Raymond Yau wrote: > > My personal use-case is Dock headphone jack vs. built-in headphone jack, > > but in principle the same could happen with Front headphone jack vs > > headphone jack (dunno if those can exist in practise). > > > > There are two cases which headphone jack won't mute the other headphone > jack when they are at same location > 1) dual headphone notebook (e.g. Dell XPS series) > > https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/hda?id=8af3aeb498197f6fdf5acc913ffe8a392cb921c9 Right X220 + dock falls into the case above, there is a headphone jack on the dock and one on the machine itself. Note that the dock headphone jack is setup by a pin fixup in the kernel. -- Sjoerd Simons <sjoerd at luon.net>
