The behavior is different with the test kernel. please find the screenshot and the alsa-info below.
** Attachment added: "Screenshot from 2019-10-20 18-18-34.png" https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1846148/+attachment/5298552/+files/Screenshot%20from%202019-10-20%2018-18-34.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1846148 Title: Realtek ALC256M with DTS Audio Processing internal microphone doesn't work on Redmi Book 14 2019 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1846148/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
