With Linux 6.6, Intel Restoring Panel Self Refresh For Aging Haswell/Broadwell Laptops

It's been ten years since Intel launched the Haswell processors that were great for the time followed by Broadwell. On the laptop side for Haswell and Broadwell the Panel Self Refresh (PSR) power-savings support has been rather notorious at least on the Linux side. Finally for the Linux 6.6 kernel due out in late 2023, the developers are re-enabling PSR support for these aging laptops...