Comment # 5 on bug 102468 from taijian@posteo.de

OK, so I finally summoned to courage to decompile my laptop's DSDT and look at
that to debug my ACPI problems - turns out that "Linux" just gets plain shafted
by the firmware. I rebootet with 'acpi_osi=!* acpi_osi="Windows 2015"' and the
problem disappeared. 

So, I'm sorry if I wasted anybody's time. I'll direct the rest of the powerplay
bugs to a different topic.