On Thu, Nov 29, 2018 at 10:23:31PM +0100, Jacek Anaszewski wrote: > Regarding sound devices - how would we name micmute LED for USB > microphone? I suppose that it is possible to discover some unique > identifier in runtime - this is a question to ALSA people. USB path (e.g. 2-1.1.2.4.3) + '::' + name ? -- With Best Regards, Andy Shevchenko