https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1065812
The real ad1980 support 5.1
Extended ID : codec=0 rev=0 AMAP LDAC SDAC CDAC DSA=0 DRA VRA Extended status : LDAC SDAC CDAC VRA PCM front DAC : 48000Hz PCM Surr DAC : 48000Hz PCM LFE DAC : 48000Hz PCM ADC : 44100Hz
but enumerated ad1980 support stereo
Extended ID : codec=0 rev=2 DSA=0 VRM VRA Extended status : VRM VRA PCM front DAC : 48000Hz PCM ADC : 44100Hz PCM MIC ADC : 48000Hz
https:/ /bugs.launchpad .net/ubuntu/ +source/ alsa-driver/ +bug/1065812
The real ad1980 support 5.1
Extended ID : codec=0 rev=0 AMAP LDAC SDAC CDAC DSA=0 DRA VRA
Extended status : LDAC SDAC CDAC VRA
PCM front DAC : 48000Hz PCM
Surr DAC : 48000Hz
PCM LFE DAC : 48000Hz
PCM ADC : 44100Hz
but enumerated ad1980 support stereo
Extended ID : codec=0 rev=2 DSA=0 VRM VRA
Extended status : VRM VRA PCM
front DAC : 48000Hz
PCM ADC : 44100Hz
PCM MIC ADC : 48000Hz