https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/hda/hda_codec.c?id=4b3acaf5b56f53ef259a6ddf8e17dcb529631d9b
It seem that you are using copy front when channel tag of two audio output are same
https:/ /git.kernel. org/cgit/ linux/kernel/ git/tiwai/ sound.git/ commit/ sound/pci/ hda/hda_ codec.c? id=4b3acaf5b56f 53ef259a6ddf8e1 7dcb529631d9b
It seem that you are using copy front when channel tag of two audio output are same