** Description changed:

- Steps:
- 1. Install manifest and boot into OS
- 2. open sound setting panel
- 3. plug an external headset to front headset port
- 4. check external microphone status
- 5. try to record sounds via external microphone
+ [Impact]
+ The Dell Precision 3630 is a desktop computer, it has only one front headset
+ jack on it, after we plug a headset in it, we can't record sound via the
+ headset-mic.
  
- Expected results: Could record sound via external microphone
+ And Realtek told us that "This platform was the fixed type headset only for
+ iphone type. Fixed type headset was not run for default headset mode rule.
+ It's hardware fixed type solution. Don't need to run software headset mode.
+ Hardware layout not support UAJ functions."
  
- Actual results: Can't record sound via external microphone
+ And Realtek submitted this patch to fix this problem.
+ 
+ [Fix]
+ With this patch, the driver only set pin 0x19 as the headset-mic and will not
+ call alcxxx_headset_mode init function anymore since the circuit is hardware
+ fixed to be iphone-type headset-mic.
+ 
+ [Test Case]
+ Boot up the system, and plug a iphone-type headset, record the sound via
+ headset-mic, it can record the sound and sound quality is pretty good.
+ 
+ [Regression Potential]
+ Very low, this patch is only specific to precision 3930 (subsystem id:
+ 0x10280871 and 0x10280872).

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https://bugs.launchpad.net/bugs/1759088

Title:
  can't record sound via front headset port on the Dell Precision 3630

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