I tried the fixes available on the internet, of which I found two, but none of them worked. 1st: changing the /etc/default/grub, where GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" changes to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash atkbd.reset" and then update-grub, then reboot 2nd:sudo apt update sudo apt install xserver-xorg-input-all

Neither of the two worked, and I would really appreciate being able to use my keyboard, as much as I would appreciate some suggestions as to how to fix this issue. Thank you in advance.

EDIT: Tried this as well, didn't work. sudoedit /etc/modprobe.d/blacklist-intel_vbtn.conf ------- where I wrote in

bug in module breaks keyboard, so don't load it

blacklist intel_vbtn

Even after blacklisting intel_vbtn, the command cat /sys/class/dmi/id/chassis_type gives me 10, and supposedly it should be either 31 or 32

PS: I forgot to mention one detail, the power button is the only one that works. Peculiar, do you not think so?

Thanks to everybody who at least thought about trying to answer this question. It suddenly started working today by itself. The only problem that I have now is that it keeps turning my microphone on and off when I press some keys on the keyboard. I don't suppose anybody here can figure this one out as well, but I'll mention it just in case.

TL;RD: i8042.noaux

I had this problem and found solution here: https://forums.linuxmint.com/viewtopic.php?p=2241355&sid=d2cf96c073389693f62bbc4d89c5fec3#p2241355 It is similar to solution of Michel, but the option is i8042.noaux - it is noticed there:

"... A firmware or kernel bug causes ACPI PNP devices to appear as available, which in turn causes the i8042 module to detect AUX ports, which are probed during resume, and this causes the keyboard to cease functioning. A workaround is to add i8042.noaux to the kernel command line..."

So, adding i8042.noaux to GRUB_CMDLINE_LINUX_DEFAULT= in /etc/default/grub to be GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.noaux" (in my case) with sudo update-grub && sudo reboot fixes the problem.

You can try the i8042.reset option ( frequent on clevo models ) to add in the /etc/default/grub :

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.reset"

And run

sudo update-grub

after and reboot