I had fedora 32 installed and the internal microphone worked well all the time.
But, after updating to fedora 33 I haven’t been able to make it work, in the Gnome settings the device is recognized but it does not catch any sound.
When I plug a earphone the microphone of it does work.
This is the output of
**** List of CAPTURE Hardware Devices **** card 1: Generic_1 [HD-Audio Generic], device 0: ALC257 Analog [ALC257 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 2: acp [acp], device 0: DMIC capture dmic-hifi-0  Subdevices: 0/1 Subdevice #0: subdevice #0
and de output of