So, It looks like we need to set some coeff to make the internal mic work, but only Realtek engineers know how to set the coeff registers.
And do one more test for external mic: run sudo hdajacksensetest -a plug the headset or external mic run sudo hdajacksensetest -a again upload the output-before.txt and output-after.txt. -- 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 [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
