Suspend/Resume Performance issues

[Dominic Fandrey]

I have several issues with acpi after a suspend/resume cycle, that
I don't have after a fresh boot:

- hw.acpi.acline is stuck on whatever was the case during resume, this
  affects c-states, powerd and battery status display.
- I often have (measurably) low performance when AC powered, independent
  of what hw.acpi.acline says. I need to plug it out and back in, sometimes
  multiple times to get the expected performance.
- Scrolling content and playing videos is jerky.
- Keys that are reported as ACPI events do not work anymore, most noticably
  the sleep key. Keys that bypass the OS (e.g. screen blank, touchpad and
  camera on/off) still work. So do keys that are reported as keyboard events,
  e.g. volume up/down.


I'm running stable/10:
FreeBSD AprilRyan.norad 10.3-STABLE FreeBSD 10.3-STABLE #0 r297559M: Mon Apr  4 19:37:05 CEST 2016     root at AprilRyan.norad:/usr/obj/S403/amd64/usr/src/sys/S403  amd64

With the Haswell GPU patch from D5837:
https://reviews.freebsd.org/D5837

The notebook model is a Schenker S403:
CPU: Intel(R) Core(TM) i7-4500U CPU @ 1.80GHz (2394.51-MHz K8-class CPU)
  Origin="GenuineIntel"  Id=0x40651  Family=0x6  Model=0x45  Stepping=1
drmn0: <Intel Haswell (ULT GT2 mobile)> on vgapci

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