Valve Updates SteamVR AMD Requirements, Recommends Using PPAs On Ubuntu

Valve updated their Linux graphics driver requirements today for using SteamVR. On the NVIDIA side you just need the proprietary 387 driver or newer and you are all set for SteamVR -- assuming your GPU is fast enough to keep pace. But on the AMD side is where there are still relatively tight requirements which leads them to recommending third-party PPAs for the best experience...