Troubleshooting • Re: Extra arguments in /proc/cmdline disabling HDMI sound

Code:

tony@raspberrypi:~ $ speaker-test -D sysdefault:CARD=vc4hdmi0 -c2speaker-test 1.2.8Playback device is sysdefault:CARD=vc4hdmi0Stream parameters are 48000Hz, S16_LE, 2 channelsUsing 16 octaves of pink noiseALSA lib confmisc.c:855:(parse_card) cannot find card 'vc4hdmi0'ALSA lib conf.c:5180:(_snd_config_evaluate) function snd_func_card_inum returned error: No such deviceALSA lib confmisc.c:422:(snd_func_concat) error evaluating stringsALSA lib conf.c:5180:(_snd_config_evaluate) function snd_func_concat returned error: No such deviceALSA lib confmisc.c:1334:(snd_func_refer) error evaluating nameALSA lib conf.c:5180:(_snd_config_evaluate) function snd_func_refer returned error: No such deviceALSA lib conf.c:5703:(snd_config_expand) Evaluate error: No such deviceALSA lib pcm.c:2666:(snd_pcm_open_noupdate) Unknown PCM sysdefault:CARD=vc4hdmi0Playback open error: -19,No such device