On Mon, 2017-11-06 at 16:56 -0700, inssrich at gmail.com wrote: > > > Looking to accomplish the following: > > * Change default microphone from analog mic to logitech 920C Webcam > Mic (or back the other way) from the command line. > > * would like to be able to do this using either/or/both the vendor > ID, product id rather than the ugly long complicated device name. My > scripting skills are rudimentary so this is lost on me. > > * If that does not work, reset the USB connection to the camera so > that it is rediscovered. > > Background > > I have a kiosk system that boots fresh every time and is configured from a > config file on a web server. Currently I have two microphones connected to > the kiosk; an analog mic into the microphone port and a logitech 920C with > internal mic. Generally the internal mic comes up as the default. I can pass > in commands from the config file and I would like the ability to choose > which microphone is active after boot using this method. the system > recognizes both microphones but the logitech does not seem to pass any sound > into the system even after manipulating it in pavucontrol. The only way I've > been able to make it work after a fresh boot is to disconnect it physically > and reconnect it, at which point it functions as expected. > > What I've tried > > I've tried a number of methods to try and change the default microphone from > analog to the logitech. The below code has worked in changing the default > device but it made no change in the function of the microphone. > > $ pacmd "set-default-source device-name-of-logitech" > > And > > $ pactl set-default-source 0 > > > > I've also followed the procedure outlined in the canned answer section > below. I chose the 4th option, which disabled the function of the analog mic > but did not make the Logitech mic work as hoped. > > https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Defa > ultDevice/ > > I can mute and unmute and change volume of the source with the below code > but it has no effect on function > > $ pactl set-source-mute 0 1 > > $ pactl set-source-volume 0 50% > > I've also tried to reset the usb device using the below code. When doing so > the logitech will dissapear from pavucontrol and then reappear but still > without any functional results to make the microphone send audio > > sudo sh -c "echo 0 > /sys/bus/usb/devices/1-4.6/authorized" > > sudo sh -c "echo 1 > /sys/bus/usb/devices/1-4.6/authorized" > > It seems like the only thing that works successfully and repeatedly is to > physically disconnect/reconnect the camera from the computer. It's a bit of > a hack but if I could reproduce that action from the command line I may be > able to get it to work, though not very elegantly. > > Also, it would be great to be able to send these commands by referencing the > vendorID and productID as I'm not always certain of what index the devices > will have if the physical connections are slightly different from system to > system. As mentioned before my command line scripting skills are pitiful so > any help in doing this would be appreciated. > > Any help frankly is appreciated...thanks in advance. This is the third time you send the same mail... I have already replied: https://lists.freedesktop.org/archives/pulseaudio-discuss/2017-November/029042.html -- Tanu https://www.patreon.com/tanuk
