You need to open bug report at bugzilla.kernel.org as your snd-cmipci driver does not have dB ranges and channel map, support 5.1 multi channels but no volume control for rear center and lfe
You need to open bug report at bugzilla.kernel.org as your snd-cmipci driver does not have dB ranges and channel map, support 5.1 multi channels but no volume control for rear center and lfe