IMAC, Mac, MacBook and other Apple devices are renowned primarily for Stability and reliability. The basis of these performances is that Apple produces both devices (computers, laptops, iPhone) and the operating system dedicated to them. We cannot compare with Windows or Android, operating systems that can be found on thousands of devices from different manufacturers. This does not mean that an Imac or MacBook Pro will never give errors.
Most of the time when on the operating system macOS O Major error, this is generated by an application that brought Kernel changes or by one External incompatible device.
Last days, while I gave closed (Power Off / Shutting Down) and iMac 27-inch, this a restarted alone from him power and gave a error message Pretty bush.
Your computer was restarted because of a problem.
I knew him quite healthy, but it seems that I was getting angry. Fortunately Apple put on Mac a system of consultation and reporting of errors very detailed and visible. Appears immediately after a Kernel error or application. In "Show Details"I found some information about the causes of this strange restart, while in the process of closing.
PowerOff timed out in phase “Notifying power plane drivers”
From all of Kernel Panics I understood that on Imac there are some traces of VirtualBox, which I thought uninstalled a few months ago. Monday in which I didn't have the slightest problem.
loaded kexts:
org.virtualbox.kext.VBoxNetAdp 6.1.20
org.virtualbox.kext.VBoxNetFlt 6.1.20
org.virtualbox.kext.VBoxUSB 6.1.20
org.virtualbox.kext.VBoxDrv 6.1.20
@filesystems.smbfs 3.6
>!ATopCaseHIDEventDriver 4050.1
>AGPM 122.1
>!APlatformEnabler 2.7.0d0
>X86PlatformShim 1.0.0
@filesystems.autofs 3.0
@fileutil 20.036.15
>!AHIDALSService 1
>!AUpstreamUserClient 3.6.8
@kext.AMDRadeonX6000 4.0.5
@kext.AMDRadeonServiceManager 4.0.5
>!AGraphicsDevicePolicy 6.3.3
@AGDCPluginDisplayMetrics 6.3.3
>pmtelemetry 1
I don't know if this was the problem but immediately After I gave "shut down" to Imac, before he turns to close am oprit Bluetooth la tastatura Magic Keyboard si la Magic Mouse (Yes, I moved quickly). In the next second Imac restarted and displayed the error above.
In the next few days the problem has not been repeated, but I have not tried to "cut" a Bluetooth connection while closing.
But I heard that there are still populations who have somewhat similar problems, in the sense that periodically it opens alone. If you have the problem with a poppy or imac that starts alone, make sure that in "System Preferences" the "Energy Saver"You do not have the options"Start up automatically after a power failure". This option will restart IMAC if a current, but also large variations in food appears. So if Mac starts alone, make sure this option is deactivated.
"Wake for Network Access" is another option that can start IMAC with a simple message from the local network (LAN). If you do not need to open Mac with Wake-on-LAN, this option has nothing to do.
You can leave a comment if you have problems with a poppy or IMAC that opens yourself.
