On Tue, 06 Mar 2018 10:03:38 +0100, Kailang wrote:

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-----Original Message----- From: Takashi Iwai [mailto:tiwai@suse.de] Sent: Tuesday, March 06, 2018 4:49 PM To: Kailang Cc: (alsa-devel@alsa-project.org) Subject: Re: Dell new AIO platform

On Tue, 06 Mar 2018 08:54:39 +0100, Kailang wrote:

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Hi Takashi,

This platform was only one phone Jack. Add dummy lineout verb to fix automute mode disable. This just the workarround.

I'm not sure why this phantom line pin is needed. What happens without that?

Looks like I find the root cause for this issue, since there is only one output device (headphone）， so the Auto-mute is not supported on this machine, as a result, when users plug headphone to the jack, audomute_hook or hp_automute_hook will not be called, then the alc_update_headset_mode() will not be called, and alc_headset_mode_default() will not be called. the headset jack is always in the alc_headset_mode_unplugged() state.

OK, now understood.

I can take the patch as a tentative workaround. But for the proper fix, could you give alsa-info.sh output?

thanks,

Takashi