Yes, I can reproduce now with two different headsets. Both have a four pin connector. One is from an Android phone, the other I think is Apple.
When I
* boot into Mac OS, and connect the Android headset, I can not see it as in audio input in the settings
* boot into Mac OS, and connect the Apple headset, I can see it in the settings
* boot into Ubuntu and connect the Apple headset, I can not see it as an input
So, I think there is still some hardware detection not working properly in Ubuntu.
Oh. I didn't know. Thanks for explaining Daniel!
Yes, I can reproduce now with two different headsets. Both have a four pin connector. One is from an Android phone, the other I think is Apple.
When I
* boot into Mac OS, and connect the Android headset, I can not see it as in audio input in the settings
* boot into Mac OS, and connect the Apple headset, I can see it in the settings
* boot into Ubuntu and connect the Apple headset, I can not see it as an input
So, I think there is still some hardware detection not working properly in Ubuntu.
I attach some photos.