Assuming that it reads the status of the audio chip and transmits both the jack detection event and the associated values to the HDAudio.sys driver, it should be possible for the BootCamp driver to emulate those two trigger events slightly spaced in time that HDAudio.sys needs for now. That being said, Apple provides a driver for the cs420x chips in their BootCamp packages. These products combine audio ADCs and DACs into single ICs designed to provide maximum flexibility, features and performance. So, it would seem that Microsoft has to rectify the way their HDAudio.sys behaves with respect to these TRRS jacks. Audio codec products from Cirrus Logic include stereo codecs and multi-channel codecs for surround sound applications. Audio codec products from Cirrus Logic include stereo codecs and multi-channel codecs for surround sound applications. In this configuration, HDAudio.sys sees only one detection event associated with the headphones, and there is no way a second event associated with the microphone can be triggered physically. The workaround mentioned in the article above does not work due to the particular way the TRRS jack and the audio chip (cs4206, cs4207 and cs4208) are wired in the MacBooks: only a single jack detection event is possible, and if one is detected, a value is set in the chip, which reports the presence of a microphone. I followed the instructions given on the Apple Support page for upgrading to Windows 10 64-bit version. It appears that the problem stems from Microsoft's HDAudio.sys driver: Created on SeptemWindows 10 and MacBook Air - external speaker problem I recently upgraded from Windows 7 to Windows 10 on MacBook Air. People are frustrated by the fact that the microphone on their headset is properly detected in OS X, but not in Windows/Bootcamp.

In these, a single 3.5 mm jack connector is used to combine a stereo pair OUT with a mono microphone IN. The problem has been around for quite some time now, i.e., since the so-called TRRS jacks were introduced in MacBooks.

Cirrus logic cs4206b driver windows 10