There is no any internal mic or external mic defined according to the init verb.
Does those mics work under windows? If yes, please collect the log under windows. ** Attachment added: "RtHDDump_V226.zip" https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1846148/+attachment/5293871/+files/RtHDDump_V226.zip -- 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