Resolved M2 Mac Mini not sleeping at all and wasting power

[saldin]

I'm new to the Mac Mini and Apple desktops in general. This is my first one, which I got to replace a faulty Early-2011 MBP.

I purchased it about a month ago and I've noticed it doesn't go to sleep at all. I have a company-provided M1 MBP and iStatMenus shows it does go to sleep, waking up about 5-6 times every hour (screenshot attached). The same iStat shows the Mac Mini doesn't go to sleep at all. I'm worried: it's wasting power for nothing...

Before walking away for the day, I press the TouchID button to lock the screen, which puts the monitor (HP E22 G4) to sleep after a couple of seconds, and I turn off both, the Magic Keyboard and the Magic Trackpad to conserve battery. I thought this should surely take care of the powerd and bluetoothd assertions... I have no printer installed, so I'm not sure why there would be a CUPS assertion...

I've run the pmset command and this is the output:

~ % pmset -g
System-wide power settings:
Currently in use:
standby 0
Sleep On Power Button 1
autorestart 0
powernap 1
networkoversleep 0
disksleep 10
sleep 1 (sleep prevented by sharingd, powerd, bluetoothd)
ttyskeepawake 1
displaysleep 10
tcpkeepalive 1
lowpowermode 0
womp 1

~ % pmset -g assertions
2023-05-03 09:11:28 -0600
Assertion status system-wide:
BackgroundTask 0
ApplePushServiceTask 0
UserIsActive 1
PreventUserIdleDisplaySleep 0
PreventSystemSleep 0
ExternalMedia 1
PreventUserIdleSystemSleep 1
NetworkClientActive 1
Listed by owning process:
pid 725(sharingd): [0x00023d4f00018dbc] 00:01:15 PreventUserIdleSystemSleep named: "Handoff"
pid 206(cupsd): [0x0000000c00118002] 40:47:10 NetworkClientActive named: "org.cups.cupsd"
pid 93(powerd): [0x00023b0000018c84] 00:11:06 PreventUserIdleSystemSleep named: "Powerd - Prevent sleep while display is on"
pid 93(powerd): [0x0000001200088082] 40:47:04 ExternalMedia named: "com.apple.powermanagement.externalmediamounted"
pid 148(WindowServer): [0x00023b0000098c80] 00:00:00 UserIsActive named: "com.apple.iohideventsystem.queue.tickle serviceID:100002295 service:AppleHIDKeyboardEventDriverV2 product:Magic Keyboard with Touch ID and Numeric Keypad eventType:3"
Timeout will fire in 600 secs Action=TimeoutActionRelease
pid 141(bluetoothd): [0x00023d9900018dda] 00:00:02 PreventUserIdleSystemSleep named: "com.apple.BTStack"
Kernel Assertions: 0x10c=USB,BT-HID,MAGICWAKE
id=509 level=255 0x4=USB creat=01/05/23, 16:32 description=com.apple.usb.externaldevice.02400000 owner=USB2.1 Hub
id=510 level=255 0x4=USB creat=01/05/23, 16:32 description=com.apple.usb.externaldevice.02200000 owner=USB3.1 Hub
id=513 level=255 0x4=USB creat=01/05/23, 16:38 description=com.apple.usb.externaldevice.02210000 owner=USB3.0 Device
id=514 level=255 0x100=MAGICWAKE creat=01/05/23, 16:26 description=en1 owner=IOSkywalkNetworkBSDClient
id=515 level=255 0x100=MAGICWAKE creat=01/05/23, 16:38 description=en0 owner=en0
id=520 level=255 0x8=BT-HID creat=02/05/23, 6:52 description=com.apple.driver.IOBluetoothHIDDriver owner=AppleHSBluetoothDevice
id=521 level=255 0x8=BT-HID creat=02/05/23, 7:08 description=com.apple.driver.IOBluetoothHIDDriver owner=AppleHSBluetoothDevice

Thanks in advance!

 

[saldin]

iStat Menus showing CPU activity on both, M1 MBP and M2 Mini

 

[saldin]

Sleep is working now. A few hours ago I went to save a webpage as PDF (because I didn't have any printers installed, as I mentioned) and I was shocked to see the print dialog showing me 4 printers.

They were not in the Printers And Scanners preference pane, I checked it was empty, so I guess they weren't correctly imported from my MBP 2011. I had to enable and use the CUPS web administration to remove them all.

Forgot about it until now that I see the gaps in CPU usage in iStatMenus. Nothing else was configured nor changed.

Can't be happier!

 

[chrfr]

At idle, the M2 mini only uses 7W, so even when it’s not actually sleeping, power consumption is very minimal.

Mac mini power consumption and thermal output (BTU) information - Apple Support

Learn about the power consumption and thermal output of Mac mini computers.

support.apple.com

 

[saldin]

At idle, the M2 mini only uses 7W, so even when it’s not actually sleeping, power consumption is very minimal.

Mac mini power consumption and thermal output (BTU) information - Apple Support

Learn about the power consumption and thermal output of Mac mini computers.

support.apple.com

Not arguing that the power consumption is low, but it wasn't doing what it was supposed to, and in the end 0W is better than 7W

 

[chrfr]

Not arguing that the power consumption is low, but it wasn't doing what it was supposed to, and in the end 0W is better than 7W

It's using more than 0W if it's asleep, though. Background processes, which Apple used to call "Power Nap," still happen on Apple Silicon Macs, and that can't be turned off except on Intel Macs.

 

[saldin]

It's using more than 0W if it's asleep, though. Background processes, which Apple used to call "Power Nap," still happen on Apple Silicon Macs, and that can't be turned off except on Intel Macs.

Forgot about this thread and didn't noticed you posted. Let me state it once again: idle =/= sleep. The M2 Mac mini uses 0.5W when sleeping (source: https://www.apple.com/environment/pdf/products/desktops/Mac_mini_PER_Jan2023.pdf) and I prefer that it spends that than the 7W you mention (or 3.96W according to their own report).