Shout-out to @Mario_Limonciello ! With the PPD from his COPR (mariolimonciello/power-profiles-daemon Copr) I get < 3W idle with the following setup:
- Lowest display brightness
- Keyboard backlight off
- Power saver
- Bluetooth off
- Wifi on
- 125% display scaling
- 2x USB-A, 1x USB-C, 1x HDMI expansion card
- WD Black SN770 1TB
- 2x Kingston ValueRAM KVR56S46BS6-8
This is on a pretty much stock Fedora 39 with the following changes:
- Installed PPD from mariolimonciello/power-profiles-daemon Copr
- Enable Firefox HW acceleration as explained here and here
- Disable NMI watchdog for power savings (not sure how much value this adds): see here
- Enable HDMI card auto-suspend|: see here