Oh, forgot to add testing info of 2 kernels:
With hirsute: the old kernel is linux-5.10.0-1027-oem, the new kernel is linux-5.11.0-26.28-generic.
With focal: the old kernel is linux-5.10.0-1027-oem, the new kernel is linux-5.10.0-1042-oem.
The internal mic could work well with all kernels.
Oh, forgot to add testing info of 2 kernels:
With hirsute: the old kernel is linux-5. 10.0-1027- oem, the new kernel is linux-5. 11.0-26. 28-generic.
With focal: the old kernel is linux-5. 10.0-1027- oem, the new kernel is linux-5. 10.0-1042- oem.
The internal mic could work well with all kernels.