in reply to #23, @hui.wang please find the dump from window10 in attachment.
** Attachment added: "RtHDDump-20191113.txt" https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1846148/+attachment/5305169/+files/RtHDDump-20191113.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 ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
