Regressions abound. I've been bitten more than once by X server upgrades, driver changes and kernel fix-ups that made my otherwise linux-friendly laptop go hayw

Regressions abound. I've been bitten more than once by X server upgrades, driver changes and kernel fix-ups that made my otherwise linux-friendly laptop go hayware. For a year now I've had to run my system with KMS polling turned of -- otherwise, I can't move my trackpad without getting 100% cpu usage by kworker processes.