On 11/16/2015 01:43 AM, ZH Tu wrote: > Hi Pierre-Louis, thanks for your reply. > > Maybe I am not make myself clear. > > Actually I refer some configure from baytrail platform: > amixer -c0 sset 'codec_out0 mix 0 pcm0_in' on > amixer -c0 sset 'media0_out mix 0 media1_in' on > amixer -c0 sset 'media1_in Gain 0' 80% > amixer -c0 sset 'media1_in Gain 0 Ramp Delay' 50 > amixer -c0 sset 'media1_in Gain 0' off > amixer -c0 sset 'pcm0_in Gain 0' 80% > amixer -c0 sset 'pcm0_in Gain 0 Ramp Delay' 50 > amixer -c0 sset 'pcm0_in Gain 0' off > amixer -c0 sset 'codec_out0 Gain 0' 80% > amixer -c0 sset 'codec_out0 Gain 0 Ramp Delay' 50 > amixer -c0 sset 'codec_out0 Gain 0' off > > Also there're some settings for the RT5672 codec, but I do not remember now. it seems that the link is active with no data? Couple of suggestions: 1. try to enable a DSP loopback to see if the data isn't garbled by the driver amixer cset "name='pcm1_out mix 0 pcm0_in" on 2. try a loopback from capture to playback to see if the data sampled by the codec can be played out. amixer -c0 sset 'codec_out0 mix 0 codec_in0' on amixer -c0 sset 'codec_out0 mix 0 codec_in1' on 3. replicate all the data on codec_out1 to make sure you have data on all 4 slots amixer -c0 sset 'codec_out1 mix 0 pcm0_in' on amixer -c0 sset 'codec_out1 Gain 0' 80% amixer -c0 sset 'codec_out1 Gain 0 Ramp Delay' 50 amixer -c0 sset 'codec_out1 Gain 0' off _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
