[Bug 1955997] Re: The airplane hotkey has no function on a HP platform

[jeremyszu]

for jammy, and verified pass on both platforms.

BTW, for jammy.

The intel-hid driver doesn't load probably caused by acpi device not found or other kernel/driver related issue.
FWIK, 5.13 is not final kernel for jammy.
I tried this patch with 5.14.0-oem-1018 kernel and it works as expected.

** Patch added: "lp1955997-unmask-intel-hid-for-HP-machines.debdiff"
   https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1955997/+attachment/5553604/+files/lp1955997-unmask-intel-hid-for-HP-machines.debdiff

** Changed in: oem-priority
       Status: In Progress => Confirmed

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Title:
  The airplane hotkey has no function on a HP platform

Status in OEM Priority Project:
  Confirmed
Status in systemd package in Ubuntu:
  New
Status in systemd source package in Focal:
  New
Status in systemd source package in Impish:
  New
Status in systemd source package in Jammy:
  New

Bug description:
  [Impact]
  The airplane hokey doesn't work on HP new generation machines.

  [Test Plan]
  Press airplane hokey.

  Before the patch, nothing happens.
  After the patch, the rfkill works as expected.

  [Where problems could occur]
  In non-gnome ubuntu, if the specific dmi contains HPQ6001, then airplane will not work but HP confirmed the new HP generation won't contain the HPQ6001 and also each DM still need to deal with multi-rfkill events because upstream changes[2].

  ---

  In the last year, HP mentions HP machines need to use hp-wireless
  (HPQ6001) as the rfkill source[1].

  However, HP confirms the HPQ6001 has been retired in the platforms
  since 2022.

  In the platforms after 2022, there are two sources of rkfill events (intel-hid, atkbd) and HP only guarantee the intel-hid works.
  Therefore, the upstream already accept the patch[2] to unmask intel-hid and mention this big change in the NEWS.

  This change makes the pre-2022 HP platforms meet the regression since they have two rfkill events (HPQ6001 and intel-hid) be triggered if pressing function key.
  Thus, there is a patch[3] to make sure the GNOME could deal with this case smoothly.
  However, the systemd change will still cause other DEs meet the regression (xfce, KDE, lxde, etc..).
  Backport systemd change to make HP 2022 platforms work is not the best choice on stable version (focal in this case).

  We still need a solution to make airplane key works on 2022 HP platforms (intel-hid and atkbd only).
  The potential solution from my mind that is to maintain a whitelist to unmask intel-hid in ubuntu-patch in focal, something like:
  ```
  evdev:name:Intel HID events:dmi:bvn*:bvr*:bd*:svnHP*:pnHPZBookFury16inchG9*:*
   KEYBOARD_KEY_8=wlan                                 # Use hp-wireless instead
  ```
  after "KEYBOARD_KEY_8=unkown".

  [1] https://bugs.launchpad.net/bugs/1883846
  [2] https://github.com/systemd/systemd/pull/20219
  [3] https://gitlab.gnome.org/GNOME/gnome-settings-daemon/-/commit/f4dbcf3d7b0f951fe44b29229206c97b625dbfda

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