Dell Precision 7510 - The loudspeaker works, but the microphone does not

Support & help
1

Hello,
The loudspeaker works, but the microphone does not.

[	SYSTEM INFORMATION	]
Manufacturer: Dell Inc.
Product Name: Precision 7510
Version: Not Specified
Wake-up Type: Power Switch

[ SOUND INFOMATION ]
System sound device list:
00:1f.3 Audio device: Intel Corporation Sunrise Point-H HD Audio (rev 31)
Subsystem: Dell Device 06d9
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
01:00.1 Audio device: NVIDIA Corporation Device 0fbc (rev a1)
Subsystem: Dell Device 06d9
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel

[	GRAPHIC INFOMATION	]
System graphic device list:
00:02.0 VGA compatible controller: Intel Corporation Device 191b (rev 06)
	Subsystem: Dell Device 06d9
	Kernel driver in use: i915
	Kernel modules: i915
01:00.0 VGA compatible controller: NVIDIA Corporation GM107GLM [Quadro M1000M] (rev a2)
	Subsystem: Dell Device 06d9
	Kernel driver in use: nouveau
	Kernel modules: nouveau
Best compatiable devices: i915
Basic compatiable devices: amdgpu nouveau