I’ve run Linux on both my Dell XPS 15 (9500) and my Zephyrus G14 (2022). In both cases, the default state is to sleep like Windows 11’s modern standby. In Zephyrus’ case, I can force the old behavior as it’s still supported by the UEFI. However, the Dell can only be powered off or use modern standby. It does not support traditional sleep states. This is, in fact, one of my main reasons for the “downgrade”.