NotEnoughStorage

Hey, I just wanted to respond to the issue of "sticking at C3 state," which nearly drove me crazy as I spent the past six hours trying to resolve it. I began by implementing all the BIOS configurations discussed in this forum, including ASPM, CPU performance settings, and disabling every onboard device except the Ethernet controller. Later, it turned out that the Ethernet controller was the problem. I also applied the PowerTOP tuning, which allowed me to reach the C3 state, as you can see here: However, at this point, I was unable to progress to further states, even though everything appeared to function correctly, with PCI devices showing "ASPM enabled." This issue persisted also on Ubuntu 24.04 LTS, which I tested using a live USB and PowerTOP. Ultimately, I managed to reach C8 by disabling the Ethernet controller: My idle power consumption dropped from 30 watts to 18 watts, measured with a basic wall power meter, with two HDDs and one SSD connected and running. Obviously, this isn't a permanent solution, so I'm planning to buy a NIC with a better Ethernet controller. Does anyone have any recommendations? My setup: • CPU: Intel i3-12100 • ASUS PRIME H610I-PLUS D4 • G.Skill Aegis 2 x 16GB DDR4-3200 (part from a gaming PC I already had) • Be quiet! Pure Power 11 600W (part from a gaming PC I already had)