open terminal n keyboard mapping mess up...like <esc>, <shift>c

[kuennleow]

i tried to perform following activities n the keyboard mapping are all messed up. no customization on keyboard done.

problem 1
--------
- open terminal
- press <pageup> key
- able to page up to previous executed command, but at the same time the "internal microphone" key pop up "ON" "OFF"

problem 2
--------
- press <esc> key
- the "internal microphone" key pop up "ON" "OFF"

test 1
------
- enable "keyboard layout chart" graphical interface
- press <right shift>+c
- only the <right shift> key blink (BAD)
- press <left shift>+c
- <left shift> and "c" keys blink (GOOD)

config files
------------
cat /etc/default/keyboard
# KEYBOARD CONFIGURATION FILE
# Consult the keyboard(5) manual page.
XKBMODEL="pc105"
XKBLAYOUT="us"
XKBVARIANT=""
XKBOPTIONS=""
BACKSPACE="guess"

uname -a
Linux yoga 5.0.0-23-generic #24~18.04.1-Ubuntu SMP Mon Jul 29 16:12:28 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-terminal 3.28.2-1ubuntu1~18.04.1
ProcVersionSignature: Ubuntu 5.0.0-23.24~18.04.1-generic 5.0.15
Uname: Linux 5.0.0-23-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: amd64
CurrentDesktop: Unity:Unity7:ubuntu
Date: Fri Aug 2 12:24:15 2019
InstallationDate: Installed on 2019-06-22 (40 days ago)
InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
SourcePackage: gnome-terminal
UpgradeStatus: No upgrade log present (probably fresh install)

[kuennleow (kuennleow)]

problem is tested on display manager "gdm3" as well as "lightdm".