** Description changed:

- An alarm 'beep beep' output during system boot at BIOS phase.
  
- [Steps to reproduce]
- 1. Install system with sutton-mccarthy-bionic-amd64-20190801-154 image.
- 2. Reboot system.
+ Since this fix is still in the maintainer's tree, I add the UBUNTU: SAUCE:
+ prefix in the patch title.
  
- [Expected result]
- No alarm 'beep beep' when system boot and poweroff.
+ And this patchset is fixing a bug in the oem project, so please merge the
+ patchset to OEM-B asap.
  
- [Actual result]
- An alarm 'beep ...' during system boot at BIOS phase.
+ [Impact]
+ We often hear the Beep noise when a couple of LENOVO laptops reboot, the
+ reproduce rate is about 3/10.
  
- [Failure rate]
- 100%
+ [Fix]
+ make the codec enter D3 before rebooting or poweroff, this can fix the issue.
+ 
+ 
+ [Test Case]
+ Tested on those LENOVO latpops, reboot 50 times, didn't reproduce the
+ noise issue.
+ 
+ 
+ [Regression Risk]
+ Low. We tested this patch on different lenovo and dell laptops, they
+ all worked well as bfore.

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https://bugs.launchpad.net/bugs/1840395

Title:
  reboot will introduce an alarm 'beep ...' during BIOS phase

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