Hey there,
I built a new server with this config:
Hardware:
Gigabyte B760M Gaming X DDR4
Intel i7-12500T
2x M2 Patriot P300 M.2 PCIe Gen 3x4 256 GB SSD (MirroredCache)
PNY CS900-2TB (VMs)
3x16 TB Toshiba Enterprise MG08ACA (Parity & Storage)
BeQuiet PURE POWER 12 M 750W
ASM1166 6xSATA Card
I set the Bios Settings like mgutt but I can't even reach C-State 3.
I stopped the VMs, Dockers,their services and the hdds connecting via ssh to watch with powertop.
The setup is running in this stage with 30w. I removed every storage except one m2 Patriot.
Still the same C2 but with 28W Idle. Then I removed the m2. Now I can get to C3 with 18W.
But how is this possible that even without anything except the usb flash I still can't go lower than C3?
EDIT: I removed all Plugins to be sure that nothing blocks this. But same result as before.
EDIT2: I did a bios update from F15 to F16 without a change. What is different to mgutt settings is that PEG PCH DMI ASPM are enabled but greyed out. So maybe a problem with the Intel 12th series like someone stated here.