Comment # 25 on bug 1180543 from Takashi Iwai

Please don't play pingpong.

There are two ways to pass the module options.  One is to pass via boot option,
and in this case, the format is
   MODULENAME.OPTION=VALUE

So you'd need to pass
  snd_hda_codec_hdmi.enable_silent_stream=0
there.

OTOH, alternative is to pass via a module config file in /etc/modprobe.d/*.conf
file, and in this case, the format is
   options MODULENAME OPTION=VALUE

So you'd need to create a file /etc/modprobe.d/hda.conf containing
   options snd_hda_codec_hdmi enable_silent_stream=0
instead.

In anyway, the fix appears in 5.10.5 kernel package.  Please test with it, then
you need no workaround any longer.  Reopen the entry only if the issue is still
seen with the new package.  Thanks.