Thanks for that summary of the ACPI issue. I guess it's just something we need to put up with, if we want to use sleep states. The last time I fixed everything, it lasted for quite a while, so that's just a decision I need to make. The alternative for me is just to lock my screen at night and unlock in the morning, which is not so terrible. I just hate leaving the computer running for that many hours when I'm not using it.
My computers are all DELLs, so all Intel inside. I imagine things could be worse. Now it's time to forget all about this for now, and watch the Abu Dhabi grand prix - the last one of the F1 season. And the last one for Louis Hamilton to be driving a Mercedes.