[    1.182802] i8042: PNP: PS/2 Controller [PNP0303:PS2K] at 0x60,0x64 irq 1
[    1.182803] i8042: PNP: PS/2 appears to have AUX port disabled, if this is 
incorrect please boot with i8042.nopnp
[    1.849086] i8042: Can't read CTR while initializing i8042
[    1.849087] i8042: probe of i8042 failed with error -5

Not sure what to tell you. Has this ever worked in the past?

You can play around with the modules options, specifically 'probe_defer'
and 'reset'. And also 'debug', maybe that results in additional useful
information.

$ modinfo i8042
name:           i8042
filename:       (builtin)
license:        GPL
file:           drivers/input/serio/i8042
description:    i8042 keyboard and mouse controller driver
author:         Vojtech Pavlik <vojt...@suse.cz>
parm:           nokbd:Do not probe or use KBD port. (bool)
parm:           noaux:Do not probe or use AUX (mouse) port. (bool)
parm:           nomux:Do not check whether an active multiplexing controller is 
present. (bool)
parm:           unlock:Ignore keyboard lock. (bool)
parm:           probe_defer:Allow deferred probing. (bool)
parm:           reset:Reset controller on resume, cleanup or both (reset_param)
parm:           direct:Put keyboard port into non-translated mode. (bool)
parm:           dumbkbd:Pretend that controller can only read data from 
keyboard (bool)
parm:           noloop:Disable the AUX Loopback command while probing for the 
AUX port (bool)
parm:           notimeout:Ignore timeouts signalled by i8042 (bool)
parm:           kbdreset:Reset device connected to KBD port (bool)
parm:           dritek:Force enable the Dritek keyboard extension (bool)
parm:           nopnp:Do not use PNP to detect controller settings (bool)
parm:           debug:Turn i8042 debugging mode on and off (bool)
parm:           unmask_kbd_data:Unconditional enable (may reveal sensitive 
data) of normally sanitize-filtered kbd data traffic debug log [pre-condition: 
i8042.debug=1 enabled] (bool)

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https://bugs.launchpad.net/bugs/2083318

Title:
  Integrated Keypad is not working in Ubuntu OS

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