Hi, I am trying Zorin Core on an old ThinkPad T60 and the install works fine. However as soon as I go through the reboot after the install, I get this severe tearing on the screen, making the install unusable. Has anyone else ever had this issue?
Yes, though it has been a long time since I did.
Do you know what graphics card you are using?
Is secure boot disabled in BIOS Settings?
Probably Zorin lite is better suitable for your old laptop.
Do you have a 64bit architecture of processor or 32bit?
The GPU is an ATI RADEON X1300, the CPU is a Core 2 Duo T7200 and I can't find the secure boot in the BIOS, I imagine it's too old for that (BIOS version is from 2010).
Oddly enough, if I boot from the live USB, everything displays fine, and I don't get any screen tearing.
The LiveUSB fallsback to generic drivers.
This often leads us all to ask, why not just use those post install. It's like, why not make the entire plane out of whatever they make the Black Box out of.
In reality, the black box is durable, but it is mostly protected by how it is mounted in the plane...
The drivers are similar. The LiveUSb is an unchangeable system that does not retain user effects upon reboot. The bare metal install must be adaptive and dynamic.
I recommend:
Zorin OS Lite, not Core. The much older Radeon Card is not going to fit with Wayland, at all.
The latest released driver from AMD dates around Ubuntu 14.04... Zorin OS 17 is based on 22.04 and the upcoming 18 will be based on 24.04.
Ok thanks, I'll try Lite and see if that works.
This worked, thanks. I have black artifacts around the corners of the windows and it lags a bit but it's usable. I guess that's to be expected on 19 year old hardware 
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Under Settings > Window Manager Tweaks > You might uncheck "enable composting" and see if that helps...
This does mean you may not get pretty trapnsparencies...