This is strange stuff that reeks of a hardware issue of some kind.
Finding the solution without having the same hardware ourselves is going
to be tricky.
First, do you need 32 bit support? I know some of those P4s could handle
64 bit. That would allow you to use newer versions which will inevitably
have more bug fixes if that's the issue. Also, support for 32 bit ends
forever for Lubuntu in 2021 so if you can avoid it, that would be
better, long term.
Second, have you tried to boot with the on board input devices disabled?
If my theory is correct, i.e. that perhaps you have a problem with your
bus, knocking it out might solve the problem. If I'm right, it will mean
external devices only, but at least things will be usable.
Third, does the spreading of disability happen quickly? When is
happening, is the system responsive to the devices still functioning? If
not, part of me wonders if it's not an issue of being bogged down due to
limited resources. If you leave it idle and do nothing with it, does the
problem occur then, too? If not, then that suggests it may actually be
the system becoming unresponsive and the behavior with the input devices
just a byproduct of that.
Finally, providing logs from /var/log/syslog and Xorg.0.log should be
helpful. Make sure the timestamps coincide with the time that the
devices stopped working.
** Changed in: lubuntu-meta (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1827734
Title:
Touchpad and Keyboard stop working on Lubuntu 18.04.2
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