Ubuntu-Mate PPC Screen Freezing During use

I’m sure there is a thread covering this.
He’s my issue: I need a simple straightforward, step by step guide to correct my iBook G4 running Ubuntu-Mate Power PC.
It freezes randomly. I really want to use the device and be involved with promoting open-source distros. I need help! I just want to use my laptop, download great open source apps, and get to work.

I’ve moved this to the https://community.ubuntu.com/c/support-help-requests category because this site isn’t designed to take tech support questions. Sorry. I’d recommend using one of the official support channels listed on the https://community.ubuntu.com/t/finding-help/712 page.