Thank Dan Ritter! after removing pulseaudio, everything return to normal. BTW i receive two copies of your mail.
On Tuesday, November 27, 2018, 5:41:45 AM GMT+8, Dan Ritter <d...@randomstring.org> wrote: Long Wind wrote: > my sound card works fine in stretch > aumix seems ok, it shows line/mic/cd ... > > but alsamixergui doesn't show those controls > it shows PulseAudio, how to get it to work? > That means you aren't really running ALSA, you're running Pulseaudio. If you want to continue running pulseaudio, you should look at pavucontrol (X mixer) and pacmd (command line control). -dsr-