[Bug 1930910] Re: Fix micmute hotkeys on HP ProBooks

[Andy Chi]

Upload debdiff of focal

** Patch added: "systemd_245.4-4ubuntu3.8~1.debdiff"
   https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1930910/+attachment/5508143/+files/systemd_245.4-4ubuntu3.8~1.debdiff

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Title:
  Fix micmute hotkeys on HP ProBooks

Status in HWE Next:
  New
Status in OEM Priority Project:
  New
Status in systemd package in Ubuntu:
  Fix Committed
Status in systemd source package in Focal:
  In Progress
Status in systemd source package in Groovy:
  In Progress
Status in systemd source package in Hirsute:
  In Progress
Status in systemd source package in Impish:
  Fix Committed

Bug description:
  [Impact]
  Micmute hotkey on many HP ProBooks don't work.

  [Fix]
  Commit a7161e0288d1 ("hwdb: Add ProBook to use micmute hotkey"), to map AT keyboard's scancode to micmute hotkey.

  [Test]
  With the one-liner fix, micmute hotkey works on all the ProBooks I tested.

  [Where problems could occur]
  The hwdb originally only matches a few ProBooks, the fix changes that to match all ProBook models. So if there's any ProBook that uses the scancode for another purpose, there will be a regression.
  However, the risk is rather slim because HP explicitly states that all ProBooks use the same scancode for mic mute hotkey.

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