Comment # 10 on bug 1206224 from Jan-Marten Br���ggemann

Hi,

I have the same problem on a Dell Latitude 7330. I did a bit debugging and I
found out that this is a problem of the Modern Standby mode intoduced by
microsoft:
https://learn.microsoft.com/en-us/windows-hardware/design/device-experiences/modern-standby

Technically the modern standby is an extension to S0 Standby mode (S0ix) so
that Windows can receive push messages, etc. while in standby.
As it is impossible to check if S0ix is supported, windows' behavior is, to use
S0ix if S3 is unsupported - if S3 is unsupported, S0ix is used.

Now modern Notebooks like current Dell devices have S3 disabled in the
firmware. It is not possible to reactivate S3 in firmware settings.

So the solution is to support S0ix in the linux kernel. The linux kernel does
this, from 5.15 ongoing.
So I used a custom build of 5.19 for testing and it works as intended.

Regards,
Jan