[Bug 216516] s2ram freezes screen (Ryzen-5650U incl. Radeon GPU)

[bugzilla-daemon at kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=216516

--- Comment #10 from kolAflash (kolAflash at kolahilft.de) ---
Created attachment 301870
  --> https://bugzilla.kernel.org/attachment.cgi?id=301870&action=edit
kernel log for s2idle: v6.0-rc6 with CONFIG_AMD_PMC enabled

(In reply to Mario Limonciello (AMD) from comment #9)
> You're missing CONFIG_AMD_PMC.

Compiled with CONFIG_AMD_PMC.

Going to s2idle two times.
(first time just for a few seconds)


The good news:
With CONFIG_AMD_PMC in s2idle the screen doesn't freeze.

The bad news:
After less than 8 hours in s2idle the battery went from 60 % to 0 % !!!
That's why there's no second wakeup.
(system was down because battery was drained)

With S3 the battery will loose less than 5 % charge in the same time.
And the notebook is brand new. So there should be no battery degradation.


... just did another s2idle test and battery went from 67 % to 58 % in one
hour.



(In reply to Mario Limonciello (AMD) from comment #6)
> [...]
> As you're patching the firmware this is not a regression.  It takes more to
> properly enable S3 in Pre-OS code than changing a variable evaluated by the
> Linux kernel's ACPI interpreter..
> 
> Thorsten - this is not a regression, patching the BIOS like this is
> completely off the beating path.  We can't possibly support S3 in Linux if
> the OEM doesn't offer it in their BIOS.

I think you exaggerate a little.
I'm just enabling existing OEM code!

Also I wouldn't say this is patching the firmware, because it's just the ACPI
data, not the BIOS software.
Just changing the existing "if" statement.
See: comment #5
I'm pretty sure there's a way to enable this OEM code without recompiling the
ACPI data. Probably by setting the MSCE variable with a hidden BIOS option or
something else I haven't found yet.

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