I was recently asked to help set up a set of logitech usb speakers for my brother who has recently made the move to Linux.? These speakers have a known problem with noise under Linux, which I was able to fix by adjusting the pulseaudio sink settings.? (many kudos to you all for making that simple) However, the volume control on the speakers behave as a usb keyboard, i.e. they don't actually control the volume, they instead signal the system that the volume knob is being turned.? Right now, the speakers volume knob is adjusting the volume of the laptop's internal speakers, leaving the usb speakers with no easy voulme control.? To me, the most obvious solution is to simply re-bind the keys to a command that adjusts the sink volume through pulseaudio.? However, in searching the web for a command to do this, I not only failed to find any command to do this, but found that pactrl, the only apparent command-line centric pulseaudio command, uses it's OWN command line.? Not only that, but the output of the program is in a rather computer-unfriendly format preventing me from simply getting the volume and feeding it back into pactrl.? It also uses a percentage format to display the volume, while it uses pa_volume_t (an unsigned integer) for volume input.? So I cam to the conclusion that pactrl was not the program I was looking for, and therefore, the program I'm looking for does not exist. Simply I'm looking for a program that would allow this: $ pavol logi-usb up or $ pavol logi-usb +300 or $ pavol logi-usb +3% to increase the volume, and similar commands to decrease it on the divice named logi-usb.? Alternatively: $ pavol logi-usb get vol: 20% $ pavol logi-usb set 23 would be appropriate. I'm willing to accept that this is not the most elegant way to do this, (I think the fact that it fits with the "Unix Way" makes is even more elegant but that's beside the point.) but I don't see anything that would accomplish anything remotely similar to this within the pulseaudio project. Am I just missing some program, or do you have a "superior" way to bind the volume controls to the volume of a particular sink? Is this something that is on the todo list? (In this case, if you can point me towards the relevant documentation, I'll take a crack at it.) -- Matthew Ellsworth
