Public bug reported:

Description:    Ubuntu 20.04.1 LTS
Release:        20.04
Kernel version: 5.4.0-52-generic (but problem began with 5.4.0-51-generic)
Keyboard:       Bus 001 Device 018: ID 056e:1063 Elecom Co., Ltd ELECOM 
TK-FCP097

Expected behaviour:
USB keyboard layout remains the same when unplugging and replugging in same 
keyboard
(This was the behaviour on 5.4.0-48-generic and earlier.)

What happened instead:
USB keyboard layout changes from: 
< _XKB_RULES_NAMES(STRING) = "evdev", "pc105", "us,jp,us,us", ",,intl,", 
"grp_led:scroll"

to:
> _XKB_RULES_NAMES(STRING) = "evdev", "pc105", "us,us", ",intl", 
> "grp:alt_shift_toggle,grp_led:scroll"
(output of xprop -root | grep XKB )

The keyboard layout is reset to the correct layout after logging out and
back in; however, unplugging and replugging the keyboard in causes the
same unexpected behaviour.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-52-generic 5.4.0-52.57
ProcVersionSignature: Ubuntu 5.4.0-52.57-generic 5.4.65
Uname: Linux 5.4.0-52-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.10
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  tyler     18578 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu Oct 29 16:35:31 2020
InstallationDate: Installed on 2020-02-05 (266 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
MachineType: Dell Inc. Latitude 5500
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-52-generic 
root=UUID=fa5c4fdb-0e37-4ef5-b109-3c129736f66c ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-5.4.0-52-generic N/A
 linux-backports-modules-5.4.0-52-generic  N/A
 linux-firmware                            1.187.3
SourcePackage: linux
UpgradeStatus: Upgraded to focal on 2020-05-12 (170 days ago)
dmi.bios.date: 07/06/2020
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.9.1
dmi.board.name: 0M14W7
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: 
dmi:bvnDellInc.:bvr1.9.1:bd07/06/2020:svnDellInc.:pnLatitude5500:pvr:rvnDellInc.:rn0M14W7:rvrA01:cvnDellInc.:ct10:cvr:
dmi.product.family: Latitude
dmi.product.name: Latitude 5500
dmi.product.sku: 08B9
dmi.sys.vendor: Dell Inc.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Confirmed


** Tags: amd64 apport-bug focal

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https://bugs.launchpad.net/bugs/1902001

Title:
  USB keyboard layout incorrect after unplugging and replugging

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