Edit: looks like you can get the Innolux on eBay for around $100 (shipped direct from China). Might have to consider that.
Added "idle=nomwait amd_iommu=off resume=<swap UUID>" kernel params and this seems to sometimes work but usually not...
And what is your battery life? I get ~5 hrs (up to 6.5hrs with most processes disabled except firefox), with around 6-8 watts discharge rate (using powertop --auto-tune).
Typical trials and tribulations of new hardware with linux. I was thinking of trying out Fedora/Ubuntu/Pop_OS to see how they are.
As for Linux, I fully intended to dual boot Arch and Windows. Due to circumstance, I am stuck with a tiny 128GB NVMe and so I am using the default Windows for now. I've been watching this playlist of a user installing Arch on their T14s to help prep me on some of the quirks: https://www.youtube.com/watch?v=ihFPynCqfzc&list=PLiKgVPlhUN.... I hope that helps answer some of your questions.