For unknown reasons my mid-2012 MBP sometimes wakes from sleep while the lid is closed and doesn't go back to sleep.
I'll check the System Monitor column next time.
Did you happen to enable "Power Nap"?
I am not sure if it's related to your issue, but I found with Power Nap enabled, UserEventAgent would appear not to prevent sleep (i.e. pmset -g would not report "sleep prevented by UserEventAgent"). However, my iMac will wake up randomly after some time after it has entered sleep state, and it will then be unable to fall back to sleep (display will be off, but fan remains on)
For unknown reasons my mid-2012 MBP sometimes wakes from sleep while the lid is closed and doesn't go back to sleep.
I'll check the System Monitor column next time.
Still the same after 10.15.2.
This morning, when I checked the assertions, the only thing it showed preventing idle sleep was handoff, which is weird to me because I saw that assertion before I put it to sleep last night and disabled handoff. I'm currently downloading Mojave to install that on a separate partition and see if it is something in Catalina that I'm fighting, or if it's something else.
I have also restored my 2017 5k iMac to Mojave for comparison, sleep worked perfectly on it.
In Catalina, UserEventAgent processes prevent my iMac entering sleep unless i kill them twice...
This issue is specific to the iMac. Catalina works perfectly on all my MacBook Air and MacBook Pros.
I can try manually and it goes into Sleep Mode for a total of 1.5 seconds.Also happens with my 2012 Mini and just live with it. I try to manually put it to sleep before stepping away. It turns (and stays) on with WiFi network access, I know. Maybe a future OSX release will resolve this.
I can try manually and it goes into Sleep Mode for a total of 1.5 seconds.
I also understand it's not just the iMac but in most of the forums I've read I'd say it's just about any Mac running Catalina. Some are having the opposite issues of not being able to wake from sleep.
Not interested in going back to Mojave because it was buggy the whole time. So much so I went back to El Capitan until Catalina was released.
Edit: Just checked. Manually put it to sleep yesterday and still sleeping today. At least that. But won't go to sleep on its own as everyone is reporting.
Lucky you. I've tried it all. Unplugged everything. Disconnected all devices and turned off Wi-Fi, Bluetooth, etc.
Nothing works.
If this was an iPhone issue Apple would've already released a fix.They don't seem to get in a hurry with Macs.
Two other things I have issues with is when I click on Mail I have to click it 3-5 times to make it open and I can't change the name of my Apple Magic Bluetooth Keyboard. Strange?