Comment 45 for bug 1803179

Revision history for this message
In , bruno.n.pagani (bruno.n.pagani-linux-kernel-bugs) wrote :

(In reply to Peter Wu from comment #36)
> (In reply to Bruno Pagani from comment #35)
> > Created attachment 255035 [details]
> > acpidump for HP zBook Studio G3
> >
> > I’m attaching acpidump for HP zBook Studio G3. Things are likely happening
> > in the SSDT3 table, but can’t understand what is the problem. Maybe
> > something around that PEGS function…
>
> PEGS only reads from an address (should not have side-effects). The problem
> is in PGON where the "LKEN" function is somehow problematic and the fallback
> ACPI code (_OSI="Windows 2009" for your model) avoids the issue.
> (BTW, I have another friend with same laptop, that workaround worked for
> him.)

Thanks Peter!

However _OSI="Windows 2009" must have downsides, right? Would it be only Nvidia card PCIe port PM or something in the like.