> > HW: ThinkPad T-510, x86_64 > SW: Arch Linux (synched within a week) kernel = 3.19.2, PA 6.0 > > On the above setup, the mic mute function (invoked via pavucontrol) works as > expected: Click the mute icon, it mutes the mic input, indicates the muted > state by greying out the pavucontrol mic gain control, and illuminates the > little LED on the mic mute button. > > But the analogous functionality for muting audio output only does the > first two things, and has no effect on the mute LED. (The LED is always off.) > > From googling around, I'm pretty sure that these two particular LEDs are not > directly under user control (e.g. via ACPI) but are somehow bound to the > mute/unmute functionality in the snd-hda-intel driver. This understanding is > based on kernel posts like this: > > https://bugzilla.kernel.org/show_bug.cgi?id=49391 The above report seem has no relationship with your problem, the laoptop has dual headphone jacks, four speakers and subwoofers > > and other similar ones. > > Before filing a ticket with the kernel guys, wanted to ask if this > function-LED binding is in any way under control of pulseaudio itself? > In other words, I guess what I'm asking is whether pulseaudio just tells > the driver to "mute the audio", and the driver sets the LED state accordingly, > or whether pulse tells the driver separately to "mute the audio" and also > "turn on the LED". > > Knowing the answer to this, I can post a more informative ticket to the > kernel guys. (Or maybe the fix is even in pulseaudio itself?) https://bugs.launchpad.net/ubuntu/+source/udev/+bug/408903 If your mic mute generate keypress event and key release event, you need pulseaudio also listen to those event to update the status of mic mute icon in pavucontrol https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/hda?id=b317b032d2dcb5e518cc9630cc6f1c7c24afedfc -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20150405/d77bd9c1/attachment.html>
