My laptop drains much energy during suspend mode and I'd like to identify what part is draining energy. Is it possible to list devices that are still active in suspend mode? Ideally a command could just output energy consumption by the device the moment before the suspend mode is reached. It would be great if somebody had experience with this.
(I am wondering specifically about this point. Other reasons for battery drain mentioned in other threads I found were not applicable: Display switches off correctly; system enters deep sleep; battery drain not existent in Windows; hibernation has no battery drain;
analyze_suspend.py show no error messages;
/proc/acpi/wakeup all disabled.)