Prior updating to 6.12-beta11 or so, my average idle draw according to my UPS was in the region of 30W.
After updating to 6.12-beta 11 and then 6.12.1, this increased to 40W.
Downgrading back to 6.11.5 again, back to 30W.
(The UPS recording has been validated against an external power meter which also shows an increase in idle power).
Nothing else changed on the server otherwise.
Checked that all ASPM things were the same, restarted multiple times, checked CPU usage (corefreq-cli showed CPU idling correctly at <3W and Package states correct, etc...). GUI said disks were spun down (but I did not physically check) - so maybe one or two were still running in the array.
Sadly I don't have any logs for 6.12.1 (sorry!) but it may be worth if you have a power meter somewhere doing back to back 6.11.5 to 6.12.2 tests to see if there is something silly going on.
When 6.12.2 is released I'll do some more digging, but for now I'm staying on 6.11.5.
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