Comment # 7 on bug 1179951 from Takashi Iwai

(In reply to A.Rahman Mahmoud from comment #6)
> I'm frustrated.

Me, too :)

> I tried the following
> 
> >> - Try suspend / resume via the direct write to /sys/power/state, 
>    # echo -n mem > /sys/power/state
> 
> I tried this, the same problem
> 
> >> - Change to VT1 via ctrl-alt-F1, login there, and test suspend/resume
> 
> Tried this too, still nothing
> 
> >> - Try to reset the BIOS setup, make sure that the power cable is plugged, then retest.
> 
> Unfortunately, no luck with that either
> 
> >> Also, did you install some system-wide power-saving stuff?
> 
> For this I had tlp.
> I uninstalled it, restarted, then tried again and had the same issue

You should avoid tlp package in anyway.  It's known to cause issues on many
machines.

We need to get back the state it worked...  As I mentioned, it's often BIOS
(ACPI) problem and it's never fixed in the kernel side, as usually the problem
goes away suddenly.

But if it's really another kernel issue, maybe it's worth to downgrade to the
Leap 15.2 release state before the update.  Or it might be easier to install
again but without adding the update repo.