[Bug 1868210] Re: [SRU] Load ucm on Lenovo notebooks based on bios version

[Hui Wang]

@sponsor-team,

This is a SRU of alsa-lib for bionic (18.04).

thx.


** Patch added: "alsa-lib_1.1.3-5ubuntu0.5.debdiff"
   https://bugs.launchpad.net/ubuntu/+source/alsa-lib/+bug/1868210/+attachment/5339264/+files/alsa-lib_1.1.3-5ubuntu0.5.debdiff

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https://bugs.launchpad.net/bugs/1868210

Title:
  [SRU] Load ucm on Lenovo notebooks based on bios version

Status in alsa-lib package in Ubuntu:
  Invalid
Status in alsa-lib source package in Bionic:
  Confirmed
Status in alsa-lib source package in Focal:
  Invalid

Bug description:
  [Impact]
  On some lenovo notebooks, ucm files are not loaded and mic can't be used

  [Fix]
  UCM was loaded based on cardlongname, but that can't cover all configs of the same model. Lenovo suggested to load  ucm by the first 3 letters of /sys/devices/virtual/dmi/id/bios_version, so that all configs could use just one ucm.

  [Test Case]

  [Regression Potential]

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