> > > 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. > > The main difference is only those dual headphone jacks notebook support 4 channels playback but your case cannot since headphone and dock headphone share same dac and volume and speaker is muted when you plug any headphone Can you select surround40 profile? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20141103/ddee2596/attachment-0001.html>
