Standby/Sleep not working as expected on AlderLake/RaptorLake-U/P; Marasov and Osiris

Greetings, I’m running Fw Ver: MrChromebox-2503.0 (04/27/2025) on Marasov.
In Fedora KDE 42, when the device goes to sleep the system crashes and reboots.

I’ve captured the following logs:

dmesg captured after sleep crash, system automatically rebooted: dmesg Marasov, after sleep crash - MrChromebox-2503.0 - Pastebin.com

journalctl logs prior to sleep crash: journalctl Marasov Fedora KDE 42, before sleep crash - MrChromebox-2503.0 - Pastebin.com
journalctl logs after sleep crash: journalctl Marasov Fedora KDE 42, after sleep crash - MrChromebox-2503.0 - Pastebin.com

Regarding Osiris- this system was running the prior release, 2408.1, and Windows 11. In this OS, I was able to successfully trigger sleep / standby. I boot into an Ubuntu 24.04 live usb and successfully updated the firmware to 2503.0, and found that it will no longer successfully sleep in Windows 11.

powercfg /availablesleepstates also reports no available sleep modes.