Good morning, afternoon, evening dearest Zorin OS userbase.
I come to you with a specific issue, I use Zorin OS 16 on a new Lenovo i9 Yoga Slim, which has a built in touch screen. I assume the touch screen is giving some interference, as it doesn't recognize the physical keyboard when it is turned on.
I have tried reinstalling xserver-xorg, but that didn't seem to resolve the issue.
I hope to hear from you soon!
Can you edit grub and add a grub parameter to specify your keyboard for the system to see and use:
sudo nano /etc/default/grub
Find the line:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash "
and change it to:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.direct i8042.dumbkbd"
(Yes, that says "dumb keyboard.
)
Once done, hit ctrl+x to exit, hit the y key to say yes to save, then the enter key to save as current configuration and close.
Once done, in terminal update the grub:
sudo update-grub
Reboot and test.
Thanks for the amazingly quick response Aravisian!
Sadly the dumb keyboard doesn't want to get going with the changed commandline!
Do you have something else I can try? 
Please repeat sudo nano /etc/default/grub and change to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.reset"
Then, sudo update-grub
Test..
If that one also does not work - Try:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash atkbd.reset"
sudo update-grub
Test...
Or...
GRUB_CMDLINE_LINUX_DEFAULT="atkbd.reset=1 i8042.nomux=1 i8042.reset=1 i8042.nopnp=1 i8042.dumbkbd=1 quiet splash"
Lots of grub updating practice today...
sudo update-grub
Test that one.
If still no good, please let us know.
You said the first one worked?
Maybe try a variation:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.nomux=1"
Ugh, I'm going to move down the list, it's a strange issue, after a third reboot the keyboard is not functioning again. I'm going to try your other solutions as well.
No solution seems to be working anymore 
Oh! There seems to be something in line with a previous issue like this, perhaps this can be of some use?
https://zoringroup.com/forum/4/14257/
sudo dpkg-reconfigure keyboard-configuration
It's worth a shot. Thinkpad is a little different from the yoga- Might ensure your grub file is back to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" then sudo update-grub if testing the keyboard reconfigure command.
Done! Thanks for the warning.
Is there any way for me to find out what type of keyboard is in this laptop?
Nice, I took a generic keyboard with Alt GR, and now the keyboard seems to be functioning Does Zorin OS remember this setting, or should there be an imput in the grub settings?
sudo dpkg-reconfigure keyboard-configuration is remembered - as that is not a setting but a reconfiguration of the keyboard installation.
I have tried them before installing synaptics, yes, I am going to try them again though, let's see if it changes something
Woah, the GRUB_CMDLINE_LINUX_DEFAULT="atkbd.reset=1 i8042.nomux=1 i8042.reset=1 i8042.nopnp=1 i8042.dumbkbd=1 quiet splash" has succesfully launched my keyboard!
I'm going to try rebooting a few times, to see if it sticks!
Three reboots along, and it seems like my keyboard is here to stay! Thank you so much!
One down, one to go. I moved some posts to a new thread to try to focus on the Touchpad issue:
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