System: HP Convertible x360 11-ab0XX
$ cat /sys/class/dmi/id/chassis_type
31

Keyboard was working in 5.4.0-42.
Broken with update to 5.4.0-54.
Still broken in 5.9.10.
Working in 5.4.75.

Is 5.9.10 missing the fix that was included in 5.4.75 for chassis_type
31?

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https://bugs.launchpad.net/bugs/1894017

Title:
  Keyboard not working

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  The laptop keyboard doesn't work at login or in the de. If I
  ctrl+alt+F3 from an external usb keyboard to a terminal the laptop
  keyboard works. An external usb keyboard works everywhere. The
  laptop's keyboard does work everywhere with the previous kernel
  5.4.0.42.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: linux-image-5.4.0-45-lowlatency 5.4.0-45.49
  ProcVersionSignature: Ubuntu 5.4.0-45.49-lowlatency 5.4.55
  Uname: Linux 5.4.0-45-lowlatency x86_64
  ApportVersion: 2.20.11-0ubuntu27.8
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: KDE
  Date: Thu Sep  3 03:09:49 2020
  InstallationDate: Installed on 2019-08-07 (392 days ago)
  InstallationMedia: Kubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
  MachineType: Hewlett-Packard HP Pavilion 11 x360 PC
  ProcFB: 0 i915drmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-45-lowlatency 
root=UUID=6035c42c-766d-44fd-b45c-6cdf9c74e0b5 ro quiet splash vt.handoff=1
  RelatedPackageVersions:
   linux-restricted-modules-5.4.0-45-lowlatency N/A
   linux-backports-modules-5.4.0-45-lowlatency  N/A
   linux-firmware                               1.187.3
  SourcePackage: linux
  UpgradeStatus: Upgraded to focal on 2020-04-06 (149 days ago)
  dmi.bios.date: 03/13/2018
  dmi.bios.vendor: Insyde
  dmi.bios.version: F.30
  dmi.board.asset.tag: Type2 - Board Asset Tag
  dmi.board.name: 2209
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 57.57
  dmi.chassis.asset.tag: Chassis Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: Chassis Version
  dmi.modalias: 
dmi:bvnInsyde:bvrF.30:bd03/13/2018:svnHewlett-Packard:pnHPPavilion11x360PC:pvr0977100000405F00010420180:rvnHewlett-Packard:rn2209:rvr57.57:cvnHewlett-Packard:ct10:cvrChassisVersion:
  dmi.product.family: 103C_5335KV G=N L=CON B=HP S=PAV X=MIN
  dmi.product.name: HP Pavilion 11 x360 PC
  dmi.product.sku: M0B61EA#ACQ
  dmi.product.version: 0977100000405F00010420180
  dmi.sys.vendor: Hewlett-Packard

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