Comment # 16 on bug 1226232 from Takashi Iwai

(In reply to Gui Do from comment #15)
> (In reply to Takashi Iwai from comment #14)
> > You can try to install the old Leap 15.5 kernel and test with that.
> > If that works, it means that it's a kernel regression.
> 
> As I wrote in comment 3, kernel from Leap 15.5 also does not work anymore.
> 
> Same machine, restore old backup from former installed Leap 15.5 works as
> expexcted (but EOL end of the year) - so I think is an Leap 15.6 issue.

Ah sorry, I missed that information.  So it's something in user-space, or some
subtle change that was applied to BIOS or whatever.  Tough.

In the case of user-space, it's often such like tlp, tuned or such package that
adjust the PM behavior.