NACK[U]: [PATCH 0/2][SRU][U/OEM-5.13/OEM-5.14] Fix headphone microphone function for particular Dell laptops

[Andrea Righi]

On Thu, Oct 14, 2021 at 08:04:37PM +0800, Chris Chiu wrote:
> BugLink: https://bugs.launchpad.net/bugs/1947092
> 
> [Impact]
> The Dell Latitude 5430 series with Realtek audio codec ALC3254 fail to detect the headphone microphone and thus unable to do recording.
> 
> [Fix]
> The realtek audio quirk ALC269_FIXUP_DELL4_MIC_NO_PRESENCE is required since the NID used for headphone microphone should be 0x1b instead of 0x1a, which is used for former ALC225/295 variants.
> 
> [Test Case]
> 1. Plug in the headphone microphone on the particular Dell Latitude 5430 laptop
> 2. Make sure it's detected in Audio Settings. (pulseaudio)
> 3. Record the sound via the headphone microphone and check the recorded content.
> 
> [Where problems could occur]
> No. Since the audio quirk only affect the machine with particular subsystem ID.

Already applied to unstable/5.15.

-Andrea