Hello,
with v4.14 I recognized that my file server (headless haswell system) doesn't enter packages pc3 anymore and only enters pc2 according to powertop. In v4.13 the system used pc2 and pc3. So I bisected that down to: ca91a2758fcef6635626993557dd51cfbb6dd134 is the first bad commit commit ca91a2758fcef6635626993557dd51cfbb6dd134 Author: Daniel Vetter <daniel.vet...@ffwll.ch> Date: Thu Jul 6 15:00:21 2017 +0200 drm/fb-helper: Support deferred setup Reverting this commit on top of v4.14 and v4.15-rc1 fixes the problem and the system uses package states pc2 and pc3 again. Nothing is connected to the VGA and DVI port. I'm using a kernel without modules on openSUSE 42.3. I have no "vga=xxx" or something like that on the cmdline. Thanks, Thomas